Saving the Sweet Track: The in situ preservation of a Neolithic wooden trackway,Somerset, UK

Abstract

The Sweet Track is the oldest known wooden trackway in Europe. Part of the trackway is preserved in situ in a nature reserve under an active system of hydrological management, designed to prevent damage to the monument from desiccation. The English Heritage-funded project, reported here, was established to assess the condition of the monument and the effectiveness of the management regime. The results have shown that although the trackway is highly deteriorated it still holds a wealth of archaeological information. The decay of the wood probably occurred gradually over several thousand years but the present management regime should be able to ensure its continued survival.     

Coalport Bridge: A Study in Historical Interpretation

Abstract

Industrial archaeologists frequently demand the preservation of monuments. Such preservation can be justified on the grounds that a monument has an educational function, or sometimes that it has potential for excavation. It is the purpose of this article to suggest that a surviving monument continually poses questions about its own past, and about wider historical issues, and to show how the understanding of one particular monument, the Coalport Bridge, has increased over the last twelve years, not just because new documentary sources have come to light, but because it has been possible to use the evidence of the structure itself to test the authenticity of other sources.     

Documenting and Analyzing Rock,Paintings from Torres Strait,NE Australia,with Digital Photography and Computer Image Enhancement

Abstract

The deterioration of rock-art over time is an important concern for indigenous communities, archaeologists, rock-art researchers, and cultural heritage managers. Computer enhancement has emerged as an important tool in viewing poorly visible rock paintings. While most studies regarding this technique explore the methods associated with computer enhancement there is little discussion of the results that can be generated beyond the recovery of images. This article presents results from the application of computer enhancement methods to rock paintings from the Torres Strait region in NE Queensland. The results obtained through the computer enhancement of deteriorated rock paintings are used to reveal degrees of preservation, interregional interaction, and previously undocumented spatial patterning across the strait.     

Dimensional variations of Roman masonry subjected to wetting-drying cycles

Abstract

Many Roman monuments made of opus caementicium are subjected to wetting and drying phenomena caused by water or/and humidity from the ground. The action of water impregnation on the hypothetical dimensional changes in this Roman concrete has not been considered in the literature and no experimental data are available.

The purpose of this work was the evaluation of the effect of wetting and drying cycles in a number of cores taken from an ancient Roman monument (Domus Tiberiana in the Palatine, Rome). The concrete samples were made of a pozzolanic mortar with large pieces of tuff, marble and bricks.

In spite of some differences in their composition, the behaviour of the cores was similar and, generally, quite constant during the experimental cycles. On the average, the length variation was about 3–4%,or 3–4mm for each metre and, when related to high structural walls and monuments, the possible dimensional changes were quite impressive.     

The Identity of the Nabataean 'Painted House' Complex at Baidha,North-West Petra

Abstract

An attempt is made to shed light on the identity of the Nabataean 'Painted House' from an understanding of its plan, the content of the painting and the function of the associated features, mainly the water installations. This study reveals new mythological figures unnoticed by previous scholars. These include additional cupids and, most importantly, Isis. The water installations of the monument, its functions and meaning, the content of the painting combined with comparative studies of Mediterranean and Near Eastern evidence all suggest that this monument was an Isiac (Isis) sanctuary devoted to her as a goddess of improved quality of life, good crops, good herds, and love.     

The Byzantine wall paintings from the Protaton Church on Mount Athos,Greece: tradition and science

The present work is a study of the wall painting complex in the Protaton Church (1295) on Mount Athos, Greece. These paintings, high in artistic value, are themselves a monument—representative of the Macedonian iconographic style. What follows is historic data set against the results of analytical investigations: the fruit of extensive research aimed at determining precise details about the applied painting techniques for the wall paintings. Hitherto it has been held that what was traditionally defined as “Byzantine fresco” was executed only on wet plaster with limewater as the sole binding medium. Now, however, through the application of instrumental analytical investigations, it is possible to demonstrate that a mixed technique involving both al fresco and al secco was employed. Furthermore, it was determined, on the basis of results from gas chromatography–mass spectrometry (GC/MS), that egg together with a modest amount of animal glue were the organic binding media used for the Protaton art work. It is certain that the scenes were initially begun on wet plaster. During or even after drying the painting was completed using the aforementioned protein binding media, thanks to which a more resistant cohesion to the painted layers was secured.     

Heritage and national identity: Exploring the relationship in Romania

Abstract

Within heritage studies the relationship between national heritage and national identity is frequently taken as axiomatic. The construction of a national heritage is an important part of nation‐building, and historic buildings and monuments can be powerful symbols of a nation's aspirations and identity. Yet this relationship has received relatively little empirical investigation. This paper reports an exploratory study of the heritage/national identity relationship in Romania which focuses on just one Roman monument – Trajan's bridge. For many Romanians the monument is a powerful symbol of their identity representing Dacian and Roman origins, Latinity, and the continuity of Romanian settlement in Transylvania. The monument was also seen by some as an important symbol of Romania's attempt to construct a post‐Communist identity, and to forge closer links with western Europe. However, the meanings of the monument are not shared by all Romanians, and in particular are strongly contested by Romania's Hungarian minority.     

PREHISTORIC WALL PAINTINGS: THE CASE OF THE DOMUS DE JANAS NECROPOLIS (SARDINIA,ITALY)*

The Domus de Janas (Home of the Fairies, or Home of the Witches) are Neolithic hypogea located throughout Sardinia (Italy) and decorated with red and black wall paintings. The objective of this study was to define the painting technique through the analytical characterization of the pigments and binding media. Samples of painting film from different graves have been examined by means of various analytical techniques. XRD, Raman and SEM–EDX analyses identified the red and black pigments respectively as red ochre rich in hematite and carbon black, while GC–MS analyses characterized the organic binder as egg.     

Numerical Modeling of a Church Nave Wall Subjected to Differential Settlements: Soil-Structure Interaction,Time-Dependence and Sensitivity Analysis

ABSTRACT

Historic masonry structures are particularly sensitive to differential soil settlements. These settlements may be caused by deformable soil, shallow or inadequate foundation, structural additions in the building and changes in the underground water table due to the large-scale land use change in urban areas.

This paper deals with the numerical modeling of a church nave wall subjected to differential settlement caused by a combination of the above factors. The building in question, the church of Saint Jacob in Leuven, has suffered extensive damage caused by centuries-long settlement. A numerical simulation campaign is carried out in order to reproduce and interpret the cracking damage observed in the building.

The numerical analyses are based on material and soil property determination, the monitoring of settlement in the church over an extended period of time and soil-structure interaction. A sensitivity study is carried out, focused on the effect of material parameters on the response in terms of settlement magnitude and crack width and extent. Soil consolidation over time is considered through an analytical approach. The numerical results are compared with the in-situ observed damage and with an analytical damage prediction model.     

Placing the Pillar of Eliseg: Movement,Visibility and Memory in the Early Medieval Landscape

THE LANDSCAPE CONTEXT of the early 9th-century monument known as the Pillar of Eliseg is interrogated here for the first time with GIS-based analysis and innovative spatial methodologies. Our interpretation aims to move beyond regarding the Pillar as a prominent example of early medieval monument reuse and a probable early medieval assembly site. We argue that the location and topographical context of the cross and mound facilitated the monument’s significance as an early medieval locus of power, faith and commemoration in a contested frontier zone. The specific choice of location is shown to relate to patterns of movement and visibility that may have facilitated and enhanced the ceremonial and commemorative roles of the monument. By shedding new light on the interpretation of the Pillar of Eliseg as a node of social and religious aggregation and ideological power, our study has theoretical and methodological implications for studying the landscape contexts of early medieval stone monuments.     

3D Digital Documentation,Assessment, and Damage Quantifi cation of the Al-Deir Monument in the Ancient City of Petra,Jordan

Abstract

The rock-cut monuments in the ancient city of Petra in Jordan form an outstanding tangible heritage site. Unfortunately, this important part of the world's cultural heritage is gradually being diminished due to weathering and erosion problems. In this research, an approach combining in situ surveying and laboratory analysis is applied in order to provide sufficient and comprehensive data regarding the documentation and evaluation of the status of the Al-Deir monument in Petra. The purpose was not only to quantify the damage, but also to make a first step towards creating a 3D monitoring programme of the deterioration rate. The approach presents a correlation study between the environmental condition and the surface weathering damage, using 2D mapping of the weathering form and accurate 3D realistic modelling from laser scanning and digital photogrammetry. The 2D mapping provides detailed weathering damage information for the entire stone surface of the monument, whereas the 3D modelling provides information on the spatial distribution and texture of the damage. Additionally, the 3D digital model can provide reference data as an exact guide to the restoration needed. In order to support the visual presentation of 3D surface details, a hybrid approach combining data from laser scanning and digital imagery was developed.

Studies of stone texture and spatial distribution of soluble salts were carried out at the monument in order to explain the mechanism of the weathering problem. Relative humidity, temperature, and wind are the main factors in the salt damage process. In order to study the effect of these conditions in the salt crystallization process a series of fieldwork investigations and laboratory work were undertaken. The results show that visible zoning of weathering damage is correlated to different salt concentrations.     

Combining New Awareness and Public Support for Archaeology with In Situ Preservation of an Archaeological Monument

Preserving archaeological remains in situ is one of the main objectives of the Valletta Treaty, which was signed by the Dutch government in 1992. Subsequently, preservation in situ has become one of the pillars of archaeological heritage management in the Netherlands. Another objective of the Treaty is the promotion of heritage education and raising of public awareness for the protection and investigation of archaeological heritage. Until recently, this goal has received too little attention. The design and building of an underground visitor centre, DOMunder, raised an important question: How can we transform an archaeological monument into an asset for the community and at the same time ensure long-lasting preservation? Not many parallels exist, as most archaeological sites in urban environments are seen as a burden for development. Sites are generally either excavated or left in situ; in both cases the archaeology remains invisible and inaccessible to the public. In the case of DOMunder, the location in a wet sedimentary environment provided even more challenges. This paper focuses on a few of the many questions and problems that were raised before and during the building process and the (preliminary) answers and solutions.     

The republic of san marino

Abstract

Flushing time (T_f) is an important factor which determines the hydrological, ecological and chemical functioning of lakes. However, it has never been calculated on the basis of underground supply for Polish Lakes. Due to their high altitudes, the lakes in question constitute a distinctive group among the ??czna-W?odawa Lakes. They are located in the borderland of the Cretaceous Che?m Hills (part of the Polish Uplands) and Polish Lowland. The quantity of the underground water supply was one of the key factors which make these lakes so distinctive. During periods of low precipitation, water shortages occurred in the lakes, especially Pniówno and Syczyńskie. The ??czna-W?odawa Lakes are commonly distinguished, among other Polish water bodies, as super-passive due to their water flushing time (>10 years). However, the average flushing time of the water in lakes Tarnowskie, Chuteckie, Pniówno and Syczyńskie, based on the underground supply, amounted to 606, 211, 54 and 79 days, respectively. The territorial conditions (e.g. geologic structure of catchment areas or thickness of unsaturated and saturated zones) were the most important factors that determined seasonal fluctuations of the supply to the lakes.     

Mathematics and painting

Abstract

Mathematics and painting are interrelated in many ways. At a technical level mathematics can be used to enhance our appreciation of paintings. This was recently demonstrated beautifully by Taylor, Micolich, and Jones in their analysis of Jackson Pollock's drip paintings, which led them to the conclusion that Pollock's paintings are in a way figurative pictures. Relations also exist at a more basic level. Painting and mathematics can share subject matter, as is illustrated here by a discussion of the mathematical concepts 'open' and 'closed', which are related to paintings by Pollock, Kandinsky, Turner, and van Gogh. It is suggested in conclusion that mathematics and painting are so closely related and have so many similarities that it is reasonable to consider them simply as two different but complementary ways of visualising aspects of the concrete or abstract reality in which we are embedded.     

The Fabulous Tales of the Common People,Part 1: Representing Hadrian’s Wall

Abstract

Hadrian’s Wall is one of the most instantly recognizable ancient monuments in the UK. This paper explores the historical and contemporary visualization practices which have created this iconic image. Moving between the disciplines of archaeology, cultural geography, and heritage and tourism studies, the paper draws upon a variety of data sources such as paintings, photographs, models, and reconstructions to consider how the Wall is visually represented within contemporary public discourse. The paper focuses on digital photography and considers the ways in which images create and sustain particular readings of the Wall’s function and significance. These contemporary representational practices demonstrate strong continuities, and earlier images are used to provide historical context. Emphasis is placed on the monument’s landscape setting in visual representations and the importance of this environmental context for readings of the Wall’s cultural and political significance. The present paper deals primarily with representations of the Wall, but it is argued that these representational practices are also fundamentally embodied. The physical encounters of visitors and archaeologists will be considered in greater detail in the second part of this study (Witcher, forthcoming).     

Stability and conservation of the Maxentius Basilica in the Roman Forum

Abstract

Originally extended over 6500 square metres, the Basilica of Maxentius was one of the biggest and most outstanding buildings of Roman architecture. Only one third of the monument is still standing. In celebration of the Christian Holy Year of 2000 (the Jubilee), the Soprintendenza Archeologica di Roma (SAR) started an extended project with the purpose of restoring the terrace and of studying the structural problems of the monument. CISTeC was appointed to the structural part of the project, including the study of the foundations and the proposal for the consolidation project.

The present paper reports the conclusions of the static and dynamic studies that were carried out both on the present-day Basilica and on the model of the original basilica. The results concluded that the monument could be subjected to seismic risks. Following such conclusions, a provisional consolidation project (which is currently in progress) and three final consolidation proposals were submitted to SAR. The immediate application of the provisional consolidation will give time to SAR to decide which of the final projects is the most Suitable, while still protecting and preserving the monument. The structural studies and the projects are briefly described in this paper.     

Contribution of numerical modelling of environmental parameters to the conservation of prehistoric cave paintings: the example of Lascaux Cave

Abstract

This study of Lascaux Cave consisted of simulating the evolution of changes in the levels of temperature and humidity both in the air and in the rock. By choosing different models (one-dimensional, three-dimensional, etc.), it was possible to calculate the required variables (temperature, moisture levels, speeds, etc.) at all points inside the cave, to locate zones of high water vapour concentration and to understand the nature of the airflow. The simulations described here provide the first general data on the airflow within the cave and its hygrothermic behaviour. The temperature fields result from natural convection phenomena, which are influenced by the climate outside the cave. From the point of view of air dynamics, we can observe the presence of an overall airflow that starts in the Machine Room (containing the air conditioning system installed in 1958), runs along the ground to the end of each of the branches of the cave, and returns along the cave vault to its starting point. This slow-moving phenomenon suggests the possibility of passive control of the ambient air from the Machine Room. There are localized risk areas where condensation of water vapour can occur, resulting in rapid deterioration of the limestone. Several of these areas are therefore monitored using condensation indicators placed on the cave walls or by visual observation of painted areas. The higher air speeds detected in some areas of the cave result in decay of the prehistoric paintings. The numerical modelling results, confirmed by observations and measurements in situ, should be taken into consideration when managing the conditions within the cave.     

Ruins about Merj Hîn in Subalpine Lebanon

Abstract

An attentive examination of the impressive finds of the mausoleum uncovered in 2007 in Herodium has demonstrated that these are not in accord with the characteristics of Herodian architecture as postulated by the late Prof. Ehud Netzer. The following four arguments show that this monument, which was indeed built by Herod, did not serve as his eternal resting place: ? Its moderate dimensions.

? The absence of an appropriate gateway to the burial ground, and an adequate assembly space around the tomb.

? A stratigraphic argument: The stairway leading up to the palace-fortress on the hilltop leaves the mausoleum ‘in its shade’, being also overlaid on top of the single irrigation pool that served the small garden that had surrounded the tomb.

? The absence of any correspondence between the axis of symmetry of the mausoleum, and that of Greater Herodium, indicating that these two were entirely different building projects.

Two alternative proposals are presented for the possible locations of the tomb, which might have disappeared.     

Preparation for Deep Learning:

ABSTRACT

Norman H. Hardy is not a well-known historical character, so an element of salvage exists in bringing his art and book illustration to a wider audience. His short career as an artist with the Sydney Mail and the 68 paintings in The Savage South Seas in 1907 open up a wider discourse concerning the links between art and photography, between visitation and recording in the field, between art and journalism, and between popular imagination and the publishing practices for illustrated travelogues. Hardy's paintings of Papua, Solomon Islands and New Hebrides reached a wide audience and provide a close-up, intimate record of Indigenous life in the islands, as well as hinting at complex encounters between Islanders and traders. The visual evidence in The Savage South Seas also contributes to debates about the motivations of early 20th-century Euro-American travellers, authors and purchasers of books on the Pacific and provides yet another citation of notions of faraway lands and people in the Pacific as perceived by distant readers and audiences.