Documenting and preserving cultural heritage assets is increasingly important, with threats from natural disasters, conflicts, climate change, and neglect, and some sites are both contested and physically difficult to access or document, posing the issue of “challenging heritage”. A range of innovative digital methods have emerged, offering practical, low-cost, efficient techniques for the 3D documentation of threatened heritage, including smart phone-based mobile light detection and ranging (LiDAR) and photogrammetry. Such techniques offer quick, accessible, and cost-effective alternatives to terrestrial laser scanners, albeit with reduced accuracy and detail, offering practical solutions in cases with restricted funding, limited time for access, complex architectural geometries, or the unavailability of high-end equipment on site. This paper presents a real-world case study integrating iPhone LiDAR with aerial photogrammetry for the rapid documentation of Sourp Magar Monastery, a Medieval site located in a forested slopes of the Kyrenia Range, Cyprus. Due to its poor state of preservation and years of abandonment, as well as its remote nature and location, the monastery is considered a “challenging heritage” monument. In the context of a recent international restoration initiative, a preliminary digital survey was undertaken to both document the current condition of Sourp Magar and contribute to a better understanding of its construction history. This paper outlines the workflow integrating the use of smartphone LiDAR and aerial photogrammetry, evaluates its efficacy in challenging heritage sites, and discusses its potential implications for rapid, low-cost documentation. Finally, the present paper aims to show the multifaceted benefit of easy-to-use, low-cost technologies in the preliminary study of sites and monuments.

This article relies on a combination of digital and analog data to analyze the 2D urban development of al-ʿAqaba and Jallūm districts in the Old City of Aleppo. The dataset consists of vectorized historical maps of the city spanning various historical periods. The oldest map in the collection dates back to the 1900s. Additionally, there are high-resolution orthomosaics created from a 3D model obtained through Terrestrial Laser Scanning (TLS) and Aerial Photogrammetry techniques. Through the analysis and integration of these various data types, the article proposes an analog-digital workflow that tracks the alterations in the urban fabric of the designated study area. The analysis primarily examines the alterations in the city’s two-dimensional layout and the distribution of mass and void. Tracking the changes in the street network of the studied area is the main goal of this research, along with recognizing the spatial changes in the built environment. The article identified changes in both the open spaces and the street layout.

In 2021 and 2022, the 13th and 14th seasons of excavations at the Late Bronze Age site of Hala Sultan Tekke were carried out in Area A, and as a result of these investigations numerous tombs were found. These tombs were threatened by farming. Four magnetic anomalies, indicated in the 2017 survey magnetometer map, were investigated. They represent three tombs, L198, TT, and UU, and the probable Offering Pit SS-S. The minimum number of individuals (MNI) in Pit Tomb L198, which contains only secondary burials, is six. They are associated with 21 ceramic vessels of which a few were imported from Anatolia. Chamber Tomb TT was completely excavated and contained a minimum of 25 individuals and 78 objects. Among these are 47 ceramic vessels of which a few are from the Mycenaean sphere of culture. Other mortuary gifts are various objects of metal, faience, carnelian, haematite, and rock crystal in addition to three scarabs. The incompletely excavated large (Chamber?) Tomb UU contained, so far, a minimum of 19 individuals and 140 objects. They comprise 124 ceramic vessels including numerous Late Helladic, Late Minoan, and Anatolian pottery. Other finds are bronze and gold jewellery, the latter including a diadem, and a duck-shaped ivory box from the same context as Egyptian-imported vessels of calcite. None of the tombs and the offering pit, which can all be roughly dated to the 14th century BC, were looted. [abstract abbreviated, see pdf]

The architectural complex of the al-Madrasa al-Halawiyya in Aleppo, Syria, remains one of the most remarkable monuments in the centuries-old city. First founded as the Church of St. Helen in the 6th century to serve as the Cathedral of Byzantine Aleppo, the structure preserves evidence of a complicated building history. For example, the Cathedral was converted into a mosque in 1124; later, parts of the church were integrated into a Madrassa. More recently, damage to the structure due to the war revealed information about Byzantine building methods. This research revisits the building history of the monument by relying on a parametric, Building Information Modelling (BIM) representation to compare the surviving structure with earlier reconstructions. This article addresses the following: (1) A survey of the building's history, topography, and architecture: Over the centuries, al-Madrasa al-Halawiyya has attracted Medieval monks, travellers, brigands, scholars, and more. Their accounts offer exciting opportunities to contextualise structural and functional changes to the complex. (2) An analysis of the historical structure, especially from the Byzantine period: The presented three-dimensional (3D) documentation of the site focused on historical transformations, which the authors then traced and compared by means of BIM to reconstructions proposed by Samuel Guyer (1911) and Michel Écochard (1950). This research demonstrates how a hybrid methodology can be used to establish building phases for comparison with historical and scholarly accounts, revealing new knowledge about building techniques and processes. The presented work started with a field survey of the monument, which was used to generate a hybrid 3D point cloud. Using the point cloud, the Byzantine church was virtually reconstructed and several construction phases were identified. At the same time, Heritage-BIM models were created based on the work of Guyer and Écochard. Finally, the Guyer and Écochard models were compared with the proposed Byzantine reconstruction and point cloud.