Cultural Heritage and Rockfalls: Analysis of Multi-Scale Processes Nearby the Lucus Angitiae Archaeological Site (Central Italy)

Archaeological areas in the mountain region of central Italy can be seriously threatened by geological hazards, and efforts are required to preserve cultural heritage. The Lucus Angitiae is a pre-Roman site located along the western edge of the Fucino Basin, the largest continental depression of central Apennines. The carbonate slope overhanging the area is affected by active rockfall processes from two main rock escarpments. In this paper, rockfall assessment was pursued through a 3D kinematic modelling, performed by adopting a probabilistic approach. Specific attention was dedicated to the choice and calibration of the input data, based on field evidence and a literature review. Two different sizes of wedge-shaped rock blocks were identified on rock escarpments, and specific stability analyses were performed. Sensitivity analyses accounting for possible triggering factors, such as water pressure increase and seismic action, were also carried out, together with an investigation of the seismological characteristics of the area. The results of the numerical simulations were used to design effective countermeasures in the framework of a mitigation plan for protection of the archaeological site. Finally, clues of gravity-driven slope deformations at the slope scale were documented, framing the rockfall process in a wider geological scenario.

Espacios agrarios, asentamientos prehispánicos y tecnología LiDAR en el área costera central del Ecuador

<p class="VARAbstract">The use of Light Detection and Ranging (LiDAR) technology has revolutionised pre-Hispanic archaeology in large tracts of Central America (Canuto et. al. 2018; Fisher et al. 2016; Garrison et al. 2019; Chase &amp; Weishampel, 2016). This contribution is particularly significant in areas in which jungles and a complex orography had precluded the implementation of large-scale landscape archaeology studies.</p><p class="VARAbstract">Although this technology has not been used in South America as intensively as in Central America (Mexico, Guatemala and Honduras, among others), LiDAR is beginning to be used to answer questions concerning the interaction between the landscape, pre-Hispanic societies and their economic exploitation strategies (Amazonia, Peru) (Van Valkenburg et al., 2020). This work analyses one of the most important archaeological areas in central Ecuador, Cerros de Hojas-Jaboncillo (Figs. 1 &amp; 2), which has traditionally been identified as a major centre of the Manteña culture. This culture spanned the current provinces of Manabí, Santa Elena and Guayas between the 8^th and 15^th centuries AD.</p><p class="VARAbstract">Although the site was discovered in the early 20th century (Saville, 1907 &amp; 1910; Estrada, 1957) on the slopes and summits of the Chongón-Colonche and Balzar hills range (formerly called Sierra de Bálsamo), it has not been until recent moments that the characterization of its extension, its spatial conformation, as well as the main geoarchaeological characteristics of the site have begun to be possible (López, 2008; Delgado, 2009; Tobar, 2012; Lunniss, 2012; Veintimilla-Bustamante, 2012). The limitations of previous studies were largely due to the prevalence of thick sub-tropical forests, whose trees are sometimes 14 m tall.</p><p class="VARNormal">In 2016, a large-scale LiDAR flight covering 147.78 km² at a density of 9 ppm² has revealed the main features of the archaeological complex, including various sites that illustrate a multi-nuclear settlement pattern (Figs. 5, 8 &amp; 10). The study suggests that settlements, between 0.5 and 3 ha in size (Fig. 8), followed a common pattern, standing on small long hilltop plateaus. The complexes were visually connected and were linked by a road network.</p><p class="VARNormal">There is little doubt that one of the most important discoveries concerns the relationship between archaeological sites and complex agrarian systems, which point to the exploitation of wide areas. These had irrigation systems that involved rainwater retention and water resources maximisation (Figs. 6 &amp; 8). The system made intensive rainwater use during the humid season (December-May); it also took advantage of the coastal mists that ensure precipitations on the hilltops.</p><p class="VARNormal">At the same time, the LiDAR survey has established differences between the settlement pattern in the north-eastern sector, in which the interaction between settlements and the agro-system is not so obvious, and the south-western sector, whose settlements are clearly related to wide terraced systems.</p><p class="VARNormal">These results will allow for comparisons between Cerros de Hojas-Jaboncillo and other known Manteño sites, such as Japotó (Bouchard, 2010), Agua Blanca (McEwan &amp; Silva, 1992) and Ligüiqui. All of them point to the continued occupation of the same areas, and the continuity of some sites at least between the Guangala period (500 BC.-600 AD) and the late Manteño period (12^th-15^th centuries), as seen in Salango and its territory (Béarez, Gay &amp; Lunniss, 2012).</p><p class="VARNormal">Most research in the 20^th century has argued for an increase in social complexity during the classic Manteño period (8^th-11^th centuries), following a diffusionist explanatory pattern (Estrada, 1957). However, the LiDAR analysis of the Cerros de Hojas-Jaboncillo site points to prolonged periods of stable management of the environment, a response to the need to make use of the available resources. Archaeology, through large-scale landscape studies and the in-depth characterisation of sites through wide-ranging sampling methodologies can contribute to answering the question as to whether environmental management led to the formation of a “Manteño state” or whether this society can be better defined as a chiefdom (Touchard-Houlbert, 2010).</p><p class="VARNormal"><strong>Highlights:</strong></p><ul><li><p>The study focused on the LiDAR research of the Cerro de Hojas-Jaboncillo, the most important pre-Hispanic site in the Manabi province (Ecuador).</p></li><li><p>LiDAR technology has allowed users to identify an intense occupation in a forest area, where until now, it was impossible to detect archaeological structures.</p></li><li><p>The study has established the close relationship between the pre-Hispanic occupation model and the use of complex irrigation systems.</p></li></ul>

Detecting abuses in archaeological areas using k-mean clustering analysis and UAVs/drones data

Unmanned aerial vehicles (UAVs) or drones have made great progress in aerial surveys to research and discover heritage sites and archaeological areas, particularly after having developed their technical capabilities to carry various sensors onboard, whether they are conventional cameras, multispectral cameras, and thermal sensors. The objective of this research is to use the drone technology and k-mean clustering algorithm for the first time in Nineveh Governorate in Iraq to reveal the extent of civil excesses and random construction, as well as the looting and theft that occur in the archaeological areas. DJI Phantom 4 Pro drone was used, in addition to using the specialized Pix4D program to process drone images and make mosaics for them. Multiple flights were performed using a drone to survey multiple locations throughout the area and compare them with satellite images during different years. Drone’s data classification was implemented using a k-means clustering algorithm. The results of the data classification for three different time periods indicated that the percentage of archaeological lands decreased from 90.31% in 2004 to 25.29% in 2018. Where the work revealed the extent of the archaeological area’s great violations. The study also emphasized the importance of directing authorities of local antiquities to ensure the use of drone’s technology to obtain statistical and methodological reports periodically to assess archaeological damage and to avoid overtaking, stolen and looted of these sites.

Stolen Heritage Multidisciplinary Perspectives on Illicit Trafficking of Cultural Heritage in the EU and the MENA Region

It is a well-known fact that organized crime has developed into an international network that, spanning from the simple ‘grave diggers’ up to powerful and wealthy white-collar professionals, makes use of money laundering, fraud and forgery. This criminal chain, ultimately, damages and dissipates our cultural identity and, in some cases, even fosters terrorism or civil unrest through the illicit trafficking of cultural property.The forms of ‘possession’ of Cultural Heritage are often blurred; depending on the national legislation of reference, the ownership and trade of historical and artistic assets of value may be legitimate or not. Criminals have always exploited these ambiguities and managed to place on the Art and Antiquities market items resulting from destruction or looting of museums, monuments and archaeological areas. Thus, over the years, even the most renowned museum institutions have - more or less consciously - hosted in their showcases cultural objects of illicit origin. Looting, thefts, illicit trade, and clandestine exports are phenomena that affect especially those countries rich in historical and artistic assets. That includes Italy, which has seen its cultural heritage plundered over the centuries ending up in public and private collections worldwide.This edited volume features ten papers authored by international experts and professionals actively involved in Cultural Heritage protection. Drawing from the experience of the Conference Stolen Heritage (Venice, December 2019), held in the framework of the NETCHER project, the book focuses on illicit trafficking in Cultural Property under a multidisciplinary perspective.The articles look at this serious issue and at connected crimes delving into a variety of fields. The essays especially expand on European legislation regulating import, export, trade and restitution of cultural objects; conflict antiquities and cultural heritage at risk in the Near and Middle East; looting activities and illicit excavations in Italy; the use of technologies to counter looting practices.The volume closes with two papers specifically dedicated to the thorny ethical issues arising from the publication of unprovenanced archaeological objects, and the relevance of accurate communication and openness about such topics.

Google Earth Engine as Multi-Sensor Open-Source Tool for Supporting the Preservation of Archaeological Areas: The Case Study of Flood and Fire Mapping in Metaponto, Italy

In recent years, the impact of Climate change, anthropogenic and natural hazards (such as earthquakes, landslides, floods, tsunamis, fires) has dramatically increased and adversely affected modern and past human buildings including outstanding cultural properties and UNESCO heritage sites. Research about protection/monitoring of cultural heritage is crucial to preserve our cultural properties and (with them also) our history and identity. This paper is focused on the use of the open-source Google Earth Engine tool herein used to analyze flood and fire events which affected the area of Metaponto (southern Italy), near the homonymous Greek-Roman archaeological site. The use of the Google Earth Engine has allowed the supervised and unsupervised classification of areas affected by flooding (2013–2020) and fire (2017) in the past years, obtaining remarkable results and useful information for setting up strategies to mitigate damage and support the preservation of areas and landscape rich in cultural and natural heritage.

The enigma on the date of the 79 AD Vesuvius eruption: lesson from grape archaeobotanical remains

&lt;p&gt;The sites destroyed by the eruption of Mt. Vesuvius (southern Italy) in AD 79 provide a complete picture of life in Campania during the 1&lt;sup&gt;st&lt;/sup&gt; century AD. Among the archaeological areas, the Vesuvian region constitutes an exceptional case for the wealth of botanical remains. The presence and quantity of these materials in the Vesuvian area depend on the heat of volcanic materials such as the fallout of pumice, ash and gas emitted during the eruption. Therefore, this eruption has determined, together with archaeological finds, the preservation of thousands of botanical remains represented especially by food plants like cereals (i.e. T&lt;em&gt;riticum dicoccum; Hordeum vulgare; Setaria italica&lt;/em&gt;) and pulses (i.e. &lt;em&gt;Vicia faba&lt;/em&gt; var. &lt;em&gt;minor&lt;/em&gt;; &lt;em&gt;Lens culinaris&lt;/em&gt;), olive (&lt;em&gt;Olea europaea&lt;/em&gt; var. &lt;em&gt;europaea&lt;/em&gt;) and grape remains (&lt;em&gt;Vitis vinifera&lt;/em&gt; subsp. &lt;em&gt;vinifera&lt;/em&gt;). The eruption date is still matter of discussion. Indeed, the classical theory according to the story described by Pliny the Young indicates the 24 August as the date of eruption, while recently some scholars hypothesize that the correct day is the 24 October 79 AD. The discrepancy is probably due to a wrong medieval transcription of the original text by Pliny. Some botanical remains might help solve this &amp;#160;dispute. For example, the analysis of wood anatomical traits can be targeted to detect how much of the yearly wood increment had been produced at the time of eruption. Also the variation of the conduit anatomical traits in the last wood increment might be an indicator to reconstruct the season when the vines were destroyed. In this study, we used leaf and wood remnants of &lt;em&gt;V. vinifera&lt;/em&gt; to determine the phenological phase of the vines at the time of eruption in order to provide evidence for supporting one of the two hypotheses. More specifically, a morpho-anatomical characterization was carried out on wood samples coming from Herculaneum ruins (Ercolano), and on tendrils and leaves with evidence of pruning coming from Oplontis site (Torre Annunziata). This study case is a proof of concept of the application potential of a trait-based approach in palaeobotany.&lt;/p&gt;

STUDIES FOR THE CONSERVATION AND VALORISATION OF THE ARCHAEOLOGICAL ROCK HERITAGE OF CALASCIBETTA IN SICILY, ITALY

The rock settlement of Vallone Canalotto, which stands in the valleys surrounding the town of Calascibetta – about three kilometres north from Enna, Sicily, Italy – testify to a widespread population of the area from prehistoric times up to the Middle Ages, probably linked to the agricultural and pastoral exploitation of its fertile land. This valuable heritage, dug into very soft limestone banks, is now threatened by significant erosion and disruption phenomena, which, in the absence of adequate safeguarding and maintenance actions, will lead to a progressive loss of material and the consequent collapse of some portions, making the documentable traces more and more paltry. The archaeological complex demonstrates the continuity of the funerary use from the remotest ages to the early Christian era, as testified by the excavation of rupestrian columbaria. In the early medieval period, small rural communities used the hypogeal structures for residential and religious purposes. In the present work, integrated procedures have been put in place for the 3D documentation of these artefacts, whose effectiveness has already been tested by the same team in other Sicilian rock sites. The research aims at the knowledge and cataloguing of places, which are important for the Island’s history but to date only marginally explored. It intends to stimulate and plan adequate conservation and enhancement activities. To improve the attendance of the sites, design proposals have been developed to guarantee greater accessibility to the archaeological areas and their understanding by visitors.

Multitemporal 2016-2018 Sentinel-2 Data Enhancement for Landscape Archaeology: The Case Study of the Foggia Province, Southern Italy

This paper is focused on the use of satellite Sentinel-2 data for assessing their capability in the identification of archaeological buried remains. We selected the “Tavoliere delle Puglie” (Foggia, Italy) as a test area because it is characterized by a long human frequentation and is very rich in archaeological remains. The investigations were performed using multi-temporal Sentinel-2 data and spectral indices, commonly used in satellite-based archaeology, and herein analyzed in known archaeological areas to capture the spectral signatures of soil and crop marks and characterize their temporal behavior using Time Series Analysis and Spectral Un-mixing. Tasseled Cap Transformation and Principal Component Analysis have been also adopted to enhance archaeological features. Results from investigations were compared with independent data sources and enabled us to (i) characterize the spectral signatures of soil and crop marks, (ii) assess the performance of the diverse spectral channels and indices, and (iii) identify the best period of the year to capture the archaeological proxy indicators. Additional very important results of our investigations were (i) the discovery of unknown archaeological areas and (ii) the setup of a database of archaeological features devised ad hoc to characterize and categorize the diverse typologies of archaeological remains detected using Sentinel-2 Data.