Heritage, Volume 6, Issue 3 (March 2023) – 57 articles

Organic solvents are commonly used in restoration treatments, including chromatic reintegration on polychrome artworks. They are often toxic, and their vapors have a high impact on the environment and restorers, possibly causing pathological conditions. Therefore, this study aims at defining a new green solvent that can be used for chromatic reintegration, maintaining the volatility and the desired physical–chemical properties. The dispersion forces value (F_d) of ethyl lactate was taken as reference for a comparison with the proposed solvents, since it was found to be the most used solvent for the dilution of Maimeri Restoration Colors (MRC) and Gamblin Conservation Colors (GCC). Based on the Teas fractional parameters, six solutions based on acetals and ethanol have been proposed and tested. They were mixed with both MRC and GCC, and applied on prepared canvases. The difference between the backgrounds made with reference solvent and the one made with the proposed alternatives was evaluated through spectrocolorimetric measurements. Fourier-transform infrared spectroscopy in the attenuated total reflectance mode (FTIR-ATR) was performed on the applied layers to evaluate the presence of residual solvent inside them, while the volatility of the solvents was assessed by performing gravimetric analysis. The study showed that acetals, acetals’ blends, and acetals–ethanol mixtures represent suitable alternatives for the dilution of Gamblin Conservation Color and Maimeri Restoration Colors. Full article

During World War I the soldiers’ life at and behind the frontline was captured by personal photography. While heavily regulated and censored on the allied side, conditions were more relaxed for German soldiers, and for German officers, in particular. Drawing on a large sample set of images of the same subject matter, a French church bell with a patriotic, anti-German inscription, this paper surveys the private production of picture postcards by German soldiers. Initially photographed by a range of individuals, some images were eventually produced as printed lithographed postcards by regional German publishers. The processes and limitations of the personal versus commercial production of picture postcards are discussed. Full article

Varnish removal from easel paintings is a restoration procedure that is regularly undertaken by cultural heritage conservators. In very few cases, traditional methods (chemical and mechanical) do not allow them to reach the goal of a perfectly controlled and selective cleaning. UV laser ablation has been considered since the 1990s to overcome these limitations, but its application to real cases is far from common practice. This study proposes a calibrated procedure based on ablation by an ns UV Nd:YAG laser at 266 nm combined with optical coherence tomography for micrometric laser varnish removal from inhomogeneous and highly photosensitive pictorial layers. The use of this wavelength for varnish removal, not adapted according to the literature, is discussed again after the beam shaping leading to a homogeneous and controlled intensity distribution. The innocuity is controlled by laser-induced luminescence, and some solutions for the transparency loss of the residual varnish following ablation are proposed. Full article

This study analyzes the techniques and decorative motifs of several works made using barniz de Pasto, highlighting their characteristics in order to establish comparisons with artistic phenomena of Asia and Europe. A possible link can be observed between barniz de Pasto and the Namban and Pictorial style Japanese export lacquer works of the 17th and 18th centuries. A search for similarity is justified by the documentary and material evidence of Japanese works created in these styles being transported from Japan to the Viceroyalty of New Spain by Manila galleons via the trade route between Acapulco and Callao. Additionally, traces of the Spanish culture have been recognized in barniz de Pasto. For example, printed images that circulated in the Viceroyalty of Peru have been observed on a coffer. This appropriation, also observed in the mural painting of a Central Andean church, and the presence of the image of Amaru, a Quechua deity, on the same coffer, marks the Central Andes as one of the possible places where the practice of barniz de Pasto could have been established. All of this points to Central and South America’s great ability to appropriate foreign cultures and fuse them with their own during the viceregal period, as manifested in the art of barniz de Pasto. Full article

This article summarises the extensive research conducted in recent years on the paintings by Liu Kang (1911–2004), a renowned modern Singaporean artist. The investigation considered 97 paintings made between 1927 and 1999 from the National Gallery Singapore and Liu family collections. While detailed results of the analytical studies were presented in a series of publications, the scope of this article comprises an overview of the artist’s preferential painting supports and pigments and an outline of the evolution of his working methods. The collected information considerably increases the knowledge about Liu Kang’s painting practice and may assist conservators in the diagnosing, treatment, dating and authentication of artworks of uncertain origin. The results demonstrate the importance of comprehensive multi-analytical studies, which combined with documentary sources and art history research, provide a full understanding of the artist’s painting practice. Full article

Eye-tracking technologies have matured significantly in recent years and have become more affordable and easier to use. We investigated how eye-tracking technology can be applied to evaluate the usability of mobile augmented reality applications with historical images for urban cultural heritage. The experiment involved a series of complex user evaluation sessions, combining semi-structured interviews, observations, think-aloud protocol, SUS questionnaire, and product reaction cards, complemented by eye tracking, to gather insights on the Spotlight Timisoara AR mobile application, part of a digital storytelling multiplatform for the city of Timisoara (Romania), soon to be European Capital of Culture in 2023. The results indicate strong and weak aspects of the application, both as expressed by the participants and as derived from analyzing the eye-tracking data. The paper also lists the main challenges we identified in using eye-tracking equipment to evaluate the usability of such mobile augmented reality applications for urban outdoor heritage. Full article

Focusing on the implementation of the 2003 UNESCO Convention for the Safeguarding of the Intangible Cultural Heritage (ICH), this article highlights the fact that the cataloging procedures, the way records are stored, and the metadata models used during the recording, visualization, and storage of ICH expression elements, vary from country to country. Especially in these days of great uncertainty, war conflicts, and systemic risks that may arise, it is vital to clarify what techniques will be used in the storage of ICH to ensure its unhindered preservation and dissemination over time across the globe. Using the systems thinking approach indicated for cases of great complexity, the process followed in Greece for depositing a new element in its local repository is described to demonstrate the need for a well-defined process by UNESCO, which must be followed worldwide, and which has not been defined so far. What are the potential challenges not only in determining the type of data, but also in choosing the best metadata model to use in each case when capturing these data? What technologies must be used for storing digital cultural heritage in such a way that will preserve it over time, defying physical and technological hazards? This article finally suggests how blockchain technologies (BT) can be effectively used to store the global ICH and ensure its continuity in future generations by creating a decentralized worldwide network between the heritage stakeholders. Full article

The illuminated manuscripts at the Gulbenkian Museum were produced in the 17th century, in scriptoria of the Armenian diaspora. In this work, we selected analytical methods that can be used in situ to study the colors of the illuminations. Scientific analysis based on fiber-optics reflectance spectroscopy in the visible and Raman spectroscopy has shown the use of a medieval palette based on inorganic pigments such as lapis lazuli, minium, vermilion, orpiment, indigo, two different greens (vergaut and malachite), lead white and carbon black. More importantly, in this context, it showed that the very important reds and pinks are possibly based on carminic acid. The painting technique is, however, different, as are the ways of painting the faces, hands, and vestments. The range of colors in the Bible and the three Gospel Books, enhanced by lapis lazuli blue and organic reds and pinks, demonstrates a desire to create exceptional illuminated manuscripts. Full article

On the international level, heritage is considered an essential element for the sustainable development of a country. In South Asian countries such as Pakistan, India, and Bangladesh, historic cities struggle to preserve their built heritage, due to rapid urbanisation and changing contemporary urban and architectural requirements. This contribution elaborates on the effects of urbanisation, and city development on the protected heritage of Karachi, Pakistan. The city developed in the 19th century from a mud-fortified small town along the Lyari river to become one of the busiest ports of the Indian subcontinent under British rule. Karachi has now become a metropolitan city with more than sixteen million inhabitants. Due to the accelerated rate of urbanisation and trade activities, Karachi has become Pakistan’s economic capital, resulting in the oblivion of its historical sites. Most of the city’s historic sites are in a state of dereliction, from over- or under-programming, or even under the threat of demolition. The paper focuses on the present condition of a British-era protected-heritage site through a literature review and fieldwork (mapping, drawing, archival research, interviews, photographic surveys, etc.), carried out during 2019 and 2020. The first author conducted site visits to photograph buildings and interview their users to gather feedback on how they perceive the current state of these buildings. The data were analysed to investigate how many buildings from Karachi’s British era with protected status have been demolished or are at risk of demolition. At the heart of the article is the Saddar Bazar Quarter in Karachi and its historical, social, cultural, and economic importance in the city from the British period until the present. The analysis will lead the discussion on what potential these sites/buildings hold, and how to make their preservation possible and withstand the uncurbed urbanisation and the threat of land development. Through discussion, we will focus on the social, cultural and economic aspects which the area and the buildings from the British period hold, and which can be useful in the future for the continuation of the Saddar Bazaar Quarter (SBQ), the historic urban landscape (HUL) and the heritage buildings. Full article

Hyperspectral imaging has emerged as a promising analytical method of artwork due to its potential in combining non-invasive analytical capabilities and imaging allowing the survey of the entire (or of a large area of the) surface of an artwork, which is a highly significant application for historic tapestries. This project deployed a high-resolution ClydeHSI Art Scanner, which was used with both a push-broom visible to very-near infrared (VNIR; 400–1000 nm) and near infrared (NIR; 900–1700 nm) hyperspectral cameras. Initial testing focused on the characterisation and mapping of the different materials used on historic tapestries (wool, silk, metal threads). To facilitate the dye characterisation, a collection of wool and silk samples dyed with recipes based on medieval practices was used. The samples measured using the system and the data collected formed an external reference library including the type of the natural dyes and mordants used during their production. The outcomes of the on-site deployment of this analytical instrumentation for the characterisation and analysis of 16th century tapestries on display at Hampton Court Palace will be discussed. Full article

Damage to the rocks of historic built heritage needs to be addressed to facilitate their conservation and restoration; the most serious damage is caused by environmental conditions and human activities. Buildings constructed with ignimbrite blocks bonded with lime mortar in Morelia, México, a UNESCO World Heritage site, were studied. The damage mainly occurs in the facades, on the surfaces of the rocks and in the mortar of the union exposed to climatic factors such as sun, rain, wind, and temperature changes, due to the actions of humans and vehicles emitting polluting gases; and due to pigeon excrement. This has caused the formation of patinas and flora, reduced the mechanical strength and exfoliation, decreased the density and cohesion in the mortar with rocks, and led to friction damage caused by people. In the facades of five buildings, the mechanical resistance and microstructural characteristics were indirectly determined by XRD, XRF, and SEM. The results were related to the climate, humans, and vehicular pollutant emissions. The damage was due to the environment, the influencing geographic orientation, and prevailing winds, rising capillary water on the facades, pigeon droppings, vehicular pollutant gases, and humans. Potential banks of healthy quarries were analyzed for use in the conservation and restoration of damaged monuments. Full article

The technological advancement of software and hardware and the lowering of the prices of instrumentation has made photogrammetry the preferred instrument for surveying activities in archaeological projects. Consequently, archaeological datasets have been enriched with 3D models of archaeological finds and structures. Each project has developed its work pipeline for raw data acquisition and the elaboration of models and their archiving and dissemination. In most cases, the pipeline is the result of empirical experimentation and is designed to act within the specific context of the project. To date, we still lack a shared method for a photogrammetric survey that derives from the specific design and techniques/contexts. This paper aims at proposing an approach for a shared 3D survey workflow for photogrammetry in archaeology. The general approach relies on the digital data curation framework for cultural heritage and encompasses several specialized tasks. We describe the general functions and processes and how they can be implemented in a practical workflow. As a proof of concept, we show how a preliminary release of the workflow has been applied in the context of the BeArchaeo project, for the acquisition, processing, export, modeling, archiving, and indexing of 3D models, resulting from photogrammetric surveys. A long-term aim is a methodological approach for different endeavors of cultural heritage. Full article

HERIe was used to model the effect of changes to indoor climate on the risk of humidity-induced mechanical damage (cracking and plastic deformation) to wooden panels painted with stiff gesso in two Norwegian medieval stone churches: Kinn (mean relative humidity (RH, %) = 79%) on the humid west coast, and Ringsaker (mean RH = 49%) in the drier eastern part of the country. The risk involved in moving cultural heritage objects (paint on wood) between the churches and a conservation studio with more “ideal”, stable conditions was also modeled. A hypothetical reduction in RH to ~65% and, proportionally, of the climate fluctuations in Kinn, and an increase in the RH in Ringsaker to a more stable value of ~63% via conservation heating, were found to improve (Kinn) and uphold (Ringsaker) the conformity to relevant standards and significantly reduce the risk of damage, except in the scenario of moving objects from Ringsaker to a conservation studio, when the risk would increase. The use of conservation heating could save ~50% of the heating cost. The estimated risk reductions may be less relevant for objects kept in situ, where cracks in the original paint and gesso have developed historically. They may be more relevant when moving original objects away from their proofed climate into a conservation studio for treatment. Full article

Most stained-glass windows installed during the Middle Ages have deteriorated over time due to climate and pollution. To reconstruct their alteration history over the centuries, evaluate the current environmental risk, and predict their alteration in the future, two modelling methodologies have been used. First, based on the short-term exposure of medieval-type glass in different sites, dose–response functions (DRFs) were established. These DRFs correlate relevant environmental factors (temperature, rain quantity, rain pH, relative humidity, and SO₂ concentration) with the response of the material in terms of alteration layer thickness. The second methodology consists of laboratory experiments that aim at parametrising kinetic laws as a function of specific parameters (temperature, rain pH, and relative humidity). These kinetic laws can be extrapolated over long periods, contrary to DRFs. In this study, we compared both methodologies to simulate the alteration of a model stained glass at different European sites or over different time periods. The results highlighted that the kinetic laws were able to closely represent the data, except for the polluted sites where the alteration was underestimated. This indicated that the dependence of the alteration rate on the pollutant concentrations should be included to improve the model. Full article

This paper examines eight marble samples from the architectural elements and liturgical furniture of the ecclesiastical complex of Santa Giustina in Padova (Italy), founded by the Rufus Venantius Opilio before AD 524. The provenance determination of the marbles was carried out by means of a multi-analytical approach combining mineralogical–petrographic investigations, performed by microscopic observations of thin sections, and the measurement of the ratios of stable carbon and oxygen isotopes. The results obtained were compared with up-to-date petrographic and isotopic databases (Antonelli and Lazzarini 2015), and they showed that the analyzed marbles come from the quarries of the island of Proconnesus in Asia Minor, modern Marmara Adası (Turkey). Archaeometric evidence, together with the stylistic and functional analysis of the pieces, suggests the direct importation of a complete set of sculptures, shipped at different stages of workmanship from the workshops of Constantinople and expressly ordered by a single patron, who can be identified as Opilio, founder of the basilica of Santa Giustina and praetorian prefect at the court of King Theodoric. Full article

Post-industrial cities often find themselves at a crossroads as to whether to find a new identity or embrace their industrial past. In late 2017, after the closure of major manufacturing plants in the region, the Australian city of Geelong was designated a UNESCO City of Design and embraced a “Clever and Creative” strategy which acknowledged Geelong’s industrial and design past in responding to contemporary technological, demographic, and economic challenges. However, questions remain as to which versions of the past are valued by the local community and how these stories can be shared. To better understand the social value of design and manufacturing heritage in Geelong as well as to get initial feedback on how to interpret this type of heritage through novel immersive extended reality (XR) experiences, the researchers took a community-led approach. This paper reports on the results of the initial online community surveys (N = 55–137) and in-person stakeholder interviews (N = 5) with carefully selected representatives of the local government, education, heritage, tourism, and engineering sectors. The study’s outcome demonstrates the importance of design and manufacturing heritage for the local community’s identity. Moreover, this type of heritage provides a source of inspiration, learning opportunities for future creative problem-solvers, and economic opportunities through tourism. By engaging with the social value of design and manufacturing heritage, this paper argues that more effective and targeted storytelling, game-like applications, and other digital immersive experiences such as extended reality (XR) can be used to better engage with audiences. Full article

This research focuses on the addition of an ecological, sustainable material to improve the durability of earthen constructions and for use in rehabilitation and restoration processes. Specifically, it studies the mechanical and waterproof performance of an earthen mixture with the addition of a vegetal origin gel (VOG) obtained by extracting the starch contained in rice. This solution increases the durability of the mixture and the behavior against water and improves the mechanical resistance of the system. This study is divided into two parts. First, an experimental phase was carried out in the Universitat Politècnica de Catalunya laboratory to design and develop the earthen mixtures stabilized with VOG to obtain an ecological, economical and easily replicable technology that can be transferred to any population group. The second stage consisted of the application of these mixtures and a real intervention in adobe dwellings in the community of Santa Ana Chapitiro, in the State of Michoacan, Mexico. The rehabilitation solutions and dosages were transferred to the residents of the community and applied to local adobe constructions by means of participatory design through an international development cooperation project. Good behavior of the material was found in the early stage. Full article

During the Hellenistic period and under the growing influence of the art of painting, the polychromy of Greek terracotta figurines focused not only on an elaborate rendering of color, but also on the interplay of light and shadow. Some of the best-preserved examples clearly show the subtlety of such pictorial effects. Among them is a statuette of a standing Maenad, held in the collections of the National Archaeological Museum in Athens (inv. 5000). Dating back to 150–100 BCE, it is a high-quality testament to the sculptural, as well as pictorial, coroplastic production in the workshops of Myrina (Eolide, Turkey). Combining multi-scale examination, multi-spectral imaging and non-invasive spectroscopic investigations (XRF, FTIR, FORS), a scientific study of the artefact was carried out within the framework of the Pilina project, a collaborative research program between the Louvre, the C2RMF, the National Archaeological Museum and the French School in Athens. This article presents the main results of the study by discussing the color scheme, identification of some pigments and colorants (clays of the kaolinite group, ochres, cinnabar, Egyptian blue, an anthraquinone of plant origin, likely madder, gold leaf), and painting techniques aiming at achieving chiaroscuro effects. Full article

This paper researches aspects of affirmation of intangible heritage and the valorisation of viniculture through themed wine hotels that offer integral wine experiences as well as satisfy tourists’ needs for individualism. This paper aims to explore the intangible cultural heritage through thematic wine hotels and identify special tourism products and experiences created via storytelling and co-creation that impact its competitiveness. The research design includes the selection process of wine hotels in the international context, a comparative analysis of themed hotel offers online promotions, and original research of themed offers. Data is analysed using qualitative and quantitative methodology, including statistical processing. Developed under the concept of wine tourism, themed accommodation facilities—wine hotels—are the core value in the creation of an integral wine experience. However, the research results indicate that international wine hotels do not affirm all the potential and possibilities of creating specific products and do not realise their full competitiveness. The results form a platform for the proposal of a competitiveness model, which synergically affirms hotel core competencies, expressed through tangible and intangible features, sustainability, experiences, co-creation, special advantages and marketing mix elements. Recommendations for wine hotels’ new competitiveness represent an additional contribution of the paper and point to new considerations directed towards innovations, creativity and affirmation of intangible heritage. Full article

The church of Santa Chiara with its adjacent convent, whose foundations date back to the 13th century, is a monastic complex in the city of Nardò in the province of Lecce. The current church was built ex novo between the 17th and 18th centuries under the direction of Bishop Orazio Fortunato. Currently, there is no information about the presence of crypts or burials in the church and in the adjacent area. For this reason, a campaign of geophysical investigations was undertaken using electromagnetic, electrical resistivity and ground-penetrating radar methods. Geophysical investigations were carried out both inside and in the courtyard of the church. The results showed the presence of a series of anomalies, whose interpretation suggests important structures of probable archaeological interest. Full article

The earliest foundry site of Pre-Roman Padua, in the Veneto region (north-eastern Italy), provided evidence of craft activities and residential areas dated between the end of the 9th and 1st centuries BCE. Common and fine wares were found, most of them belonging to two main ceramic classes: (i) highly dark-colored bodies with silicate inclusions; (ii) carbonate-tempered pots. Macroscopic and petrographic (POM) descriptions and spectroscopy—mineralogical (XRPD) and geochemical (XRF)—analyses were carried out to define the provenance and technological choices (production recipes and firing conditions). The first ceramic class comprised diverse local/regional productions made with a common geo-resource, consisting in quartz-rich illitic clays, for which pit firing conditions generally under 850–900 °C were adopted. The purification of the starting base clays, the tempering of the clayey pastes with silica-rich grains and/or the polishing of surfaces were accomplished for fine wares. The carbonate-tempered pottery probably corresponded to an allochthonous ceramic class that might be used in the trade of specific contents. As such pots were made out of different illitic clays and under different redox conditions, they might correspond to diverse productions. The adoption of precise choices in very specific wares, not belonging to any of these two main ceramic classes, suggests the trade of fine wares in the Veneto during the First Iron Age. Full article

This paper presents the results of the characterisation, identification, provenance determination, and quantification of the white, greco scritto-like and polychrome marbles used for architectural purposes at Forum Sempronii, a Roman town in the Marche region of Italy. Samples of five fragments of white marble and one fragment of a greco scritto-like marble have been studied using mineralogical and petrographic observations and stable isotope ratio analysis (SIRA) of carbon and oxygen. Polychrome marbles were macroscopically identified by comparison with reference samples and available image databases. Analytical results of the white and greco scritto-like marbles identified the material as coming from the quarries of Carrara (Luni, Italy) and Proconnesos (Marmara, Saraylar, Turkey) for white marble, and of Ephesos-Hasançavuslar for greco scritto-like marble. Further, at least eleven imported polychrome stone varieties were distinguished. The study clearly illustrates that Forum Sempronii had access to the main marble trade networks of the Roman Mediterranean. The early attestation of Proconnesian marble at the town’s augusteum (i.e., Augustan date) is unique for central Adriatic Italy. Full article

This article builds on insights from both critical heritage studies and Indian Ocean studies to argue that there is a need to delve deeply into how, by whom, and why heritage is practiced. Empirically, the practice of afternoon tea in Penang (Malaysia) provides insights into habits, manners, and customs in order to explore heritage as a social practice. Drawing on ethnographic field research on the island of Penang in Malaysia, this article demonstrates how the multiple forms, as well as the changing production, practice, and preservation, of local cultural heritage are used to strategically and situationally create identities in dependence of the “other” and in response to a national heritage narrative. In contrast to what is nowadays often considered a colonial vestige, I maintain that these cultural heritage elements are not foreign but part of specific local cultural heritages. Full article

The need to study, protect, and conserve archaeological heritage has enhanced the application of geophysical techniques as non-invasive and reliable tools to investigate fragile and valuable assets. This review presents the most popular geophysical techniques suitable for archaeogeophysical investigations, namely, magnetometry, ground penetrating radar, and electrical resistivity tomography, together with a series of multiparametric measures taken from aerial platforms (UAS). For each method, we recall the basic physical principles, illustrate the operative procedures for field investigation, and provide indications about data processing and modeling. We propose a flowchart to address reliable and effective geophysical investigations, from its planning to the development of the final archaeogeophysical model. We underline the integrated approach, in which the combination of various techniques allows the best results in terms of resolution, coverage, investigation depth, speed, and costs to be obtained. We introduce a suite of studied cases in which this approach has been applied successfully. Full article

The evaluation of geosites is an essential part of conserving the geodiversity and biodiversity of an ecosystem, as well as safeguarding the cultural, geological, environmental, and landscape wealth that a highly recognized geographical area possesses. In this context, Guayaquil, the pearl of the Pacific, is a city that registers, in its history and evolution, a binding relationship with the geo-biodiversity of the geosites that characterize it. This work aims to assess places of tourist interest in Guayaquil and its surrounding areas through a geo-environmental evaluation matrix to establish a sustainability proposal that promotes the geotourism development of the city. The methodology consisted of: (i) geographic registration of the chosen sites and present characteristics, (ii) environmental analysis of the sites based on the cause–effect method, and (iii) strategies for the inclusion of these sites into the geo-environmental and geotourism system of Guayaquil as potential geosites. The results demonstrate that Guayaquil has impressive geodiversity in several potential natural sites, obtaining highly representative values that reinforce the city’s natural diversity elements. Sites such as Cerro San Pedro and the Cerro San Eduardo, Pascuales, and Zeolites quarries have the most significant adverse environmental impacts. While places such as Cerro Azul, Estero Salado, Isla Santay, and Hornos de Cal (Bosque Protector Cerro Blanco), obtained positive values that highlight their environmental value, being of great benefit to the city and to nature. Furthermore, some of these places could be integrated into tourism development plans, and as potential geosites, they could complement various services and opportunities for discovering nature. Finally, all this can lead to a sustainable proposal for a Global Geopark project in Guayaquil based on the results obtained in this work. Full article

The mosaic in the apse of the Church of S. Agnese fuori le mura in Rome represents one of the most important examples of the wall mosaics of the Roman Middle Ages. Although it is associated with Byzantine figurative culture, no scientific study has addressed this important piece of Italian art history. One factor that has probably limited and created difficulties for its analysis is the poor legibility of the original parts, which are compromised by heavy restorations affecting the gold background, the faces of the two male side figures, and the lower band of the mosaic. The present work describes how multispectral imaging provided significant guidance in the preliminary identification of possible original areas in this ancient wall mosaic. Through an interdisciplinary approach, the art historical background and historical graphic documentation of known restorations supported the use of multispectral imaging to recognize original parts. The initial results of the lab analyses (SEM-EDS and EMPA) of supposed original tesserae validated the hypothesis made a priori thanks to multispectral acquisition, opening up new application possibilities for use of this noninvasive technique in the preliminary in situ identification of original parts in restored glass wall mosaics. Full article

The Ndutu cranium is a partial, fragmented, and distorted hominin specimen from the Lake Ndutu site in Tanzania. It was first reconstructed by R. J. Clarke in 1976 and later revisited using now-outdated techniques. Consequently, features such as facial projection, cranial height/length, and cranial flexion are contestable. Here, we present a new virtual reconstruction following a transparent and replicable approach that employs virtual anthropology techniques to reassemble, mirror, digitally align, complete the cranium, and remove the effect of plastic deformation. Before deciding on an approach to align the unarticulated fragments, we tested the effects of symmetrization and the use of surface semilandmarks on the performance of our tool of choice: the digital alignment tool (DTA), developed by A. Profico and colleagues in 2019. Upon completion, we compare our reconstruction to a sample of Pleistocene hominin crania via geometric morphometrics. Test results reveal that DTA performance varies by fragment and that the use of surface semilandmarks bears no statistically significant advantage. We found our reconstruction to boast a more prognate and narrower face with a less flexed cranium overall than previous reconstruction efforts. The shape of the reconstructed cranial vault of Ndutu resulted closest to Sima de los Huesos (SH) 5, while its sagittal profile was most similar to Kabwe’s, lending support to J. L. Arsuaga and colleagues’ 1997 work and to P. Rightmire’s, respectively. We warn that further work is necessary before settling the debate surrounding Ndutu’s phylogeny. However, if our reconstruction hypothesis is held, its inclusion in future morphological studies is granted. Full article

The COVID-19 pandemic led to significant changes in societies across the globe. In many countries in Europe, national lockdowns during the spring of 2020 meant that museums were closed, and maintenance and housekeeping were at a minimum. We compared the insect monitoring data of 15 museums in and around Vienna between the years 2018 and 2022 to see potential effects of the two lockdowns (spring 2020 and winter 2020/21) on insect populations. In Vienna, these changes altered the presence of pests, most notably an increase in silverfish by late spring (March–May 2020). We also found increased numbers of other pest species (notably Tineola bisselliella and Attagenus sp.), though these changes were seen later (June–October 2020). Thylodrias contractus, although found only in one museum, appeared to show decreased numbers during 2020. Storage areas in some of the museums revealed no significant increase in insect catch during the COVID-19 related closures. Since there are rarely visitors in such spaces, the situation did not change much during the closures. Silverfish are shy insects, but they were able to range more freely during the closures in the mostly darkened rooms. The increase of Tineola bisselliella and Attagenus sp. could be a result of reduced cleaning in the first lockdown. In the second lockdown, no significant changes were found. Human activity from staff was much higher compared to the first closure; a second reason could be the time of year, as in the winter period, it is mainly larvae that are active. Increased insect populations remind us that even when museums are unoccupied, they still need monitoring for possible risks from pests. No damage to the objects from the pests was observed in the museums investigated. Full article

Using the case of Macau’s joss-stick manufacturing, this study contributes to existing dialogue on issues surrounding the institutionalisation of ICH safeguarding and the consequential devitalisation of intangible values in the process of inventory. Through a close analysis of official documents, old English- and Chinese-language newspapers, pre-existing documentation, and oral and written interviews with the founders of Macau’s sole incense manufacturer, Veng Lei Laboratory (永利紙料), I will demonstrate the government’s scramble to compile an inventory of elements that lack depth and representation and the absence of communal involvement in the course of selection and inventory. Contrasting the history of the joss-stick industry with the official discourse, this study argues that the heritagisation of craftsmanship flattens the dynamics of the past experiences of practitioners and further muffles their voices. Providing an intervention to heritage studies from the historical perspective, it encourages a more careful consideration of the necessity of heritagising elements before they are inventoried. Full article

Digitalization techniques, such as photogrammetry (PG), are attracting the interest of experts in the cultural heritage field, as they enable the creation of three-dimensional virtual replicas of historical artifacts with 2D digital images. Indeed, PG allows for acquiring data regarding the overall appearance of an artifact, its geometry, and its texture. Furthermore, among several image-based techniques exploited for the conservation of works of art, multispectral imaging (MSI) finds great application in the study of the materials of historical items, taking advantage of the different responses of materials when exposed to specific wavelengths. Despite their great usefulness, PG and MSI are often used as separate tools. Integrating radiometric and geometrical data can notably expand the information carried by a 3D model. Therefore, this paper presents a novel research methodology that enables the acquisition of multispectral 3D models, combining the outcomes of PG and MSI (Visible (VIS), Ultraviolet-induced Visible Luminescence (UVL), Ultraviolet-Reflected (UVR), and Ultraviolet-Reflected False Color (UVR-FC) imaging) in a single coordinate system, using an affordable tunable set-up and open-source software. The approach has been employed for the study of two wooden artifacts from the Museo Egizio di Torino to investigate the materials present on the surface and provide information that could support the design of suitable conservation treatments. Full article