Earth resistance tomography for detecting previous excavation trenches in cave and rock shelter sites in the Lim Channel, Croatia

Earth Resistance Tomography (ERT) is a geophysical prospecting technique that has the capacity to model subsurface sediments. This technique is applied at the Cave near Rovinjsko Selo 1 site which is in the Lim Channel, Croatia. ERT is used as a means for positively identifying a previous excavation trench location within site which, in turn, informs the excavation planning process. The potential benefits of this technique are discussed for future excavation planning efforts at Romuald’s Cave, another cave site location in the Lim Channel. While beneficial in this study, the technique’s utility will vary in other locations according to site conditions, amount of previous excavation activities, and age of earlier excavation activities which affects both the geophysical survey design and applicability of ERT to the specific site environment

New research on the Late Pleistocene in the Lim Channel, Istria

As a part of the multidisciplinary project entitled ‘Archaeological Investigations into the Late Pleistocene and Early Holocene of the Lim Channel, Istria’, archaeological research has been conducted at four sites: Romuald's Cave, Abri Kontija 002, Pećina at Rovinjsko Selo and Lim 001 (Figure 1). There is much debate on issues related to biological and behavioural continuity, to patterns of changes and adaptations during this crucial period, and to external factors (e.g. changes in ecology and climate). For example, a clearer insight is needed into how climatic change affects the ecology of specific regions, including changing sea levels. Additionally, there continues to be debate centring on who produced the earliest (Initial) Upper Palaeolithic industries in Europe. To achieve a more precise insight into long-term diachronic changes and cultural relations around the Adriatic, and to document the presence of Middle and Upper Palaeolithic humans in Istria, we concentrated on a single microregion (the Lim Channel in Istria, Croatia). Here we report work on the two sites that to date have yielded Pleistocene material: Romuald's Cave and Abri Kontija 002

Hunter-gatherers across the great Adriatic-Po region during the Last Glacial Maximum: Environmental and cultural dynamics

During the Last Glacial Maximum (LGM, 30 to 16.5 ka ago), the Great Adriatic-Po Region (GAPR) was deeply affected by the spread of glaciers from the Alps to the southern foreland and by the dropping of the sea level to ~ -120 m amsl. The combination of these two events triggered the aggradation of the Great Po Plain (GPP), a vast flat area between the Alpine chain, the Italian Peninsula and the north-western Balkan Peninsula, physically and ecologically featured through a range of palaeogeographic and palaeoecological conditions. The low-elevated Prealpine sectors and the Alpine foothills supported more extensive forest stands, due to increased orographic rainfall. These were open boreal forests which persisted throughout the LGM, while open woodlands, steppes, semideserts and wetlands occupied the lowlands. A complex ecogradient, including both an Alpine and a continental timberline, is documented by the fossil records at the NE Alpine border, with a larch-pine forest-steppe belt, in contact with steppes and loess areas extending in the plain, on the dry extreme of the gradient. Still, edaphic wetlands occupied the waterlogged silty soils in the lowlands. Other areas, marked by active geodynamic processes, supported semideserts, i.e. grooves of xerophytic herbs and shrubs. Enhanced aridity and the development of deflation areas, prompted the accretion of loess cover at the northern and southern margins of the GPP. Fauna recorded the gradual disappearance of mammoth, woolly rhino and giant deer, together with cave bear. Gravettian and Epigravettian hunter-gatherer groups inhabited the GPP, although their presence and settlement dynamics at the margins and across this region has long been questioned. As a matter of fact, a handful of archaeological sites composes a patchy record of the peopling of the plain itself. At the northern rim of the GAPR, characterized by a well-developed karst region, several caves and rock shelters record the presence of hunters of bisons and horses at the margins of the GPP and ibexes and cave bears in some hilly landscapes. Nonetheless, evidence of contacts across this area is provided by the exploitation of chert sources and by stylistic and technical similarities in the lithic industries. The work resumes the currently available multidisciplinary data and adds new petroarchaeological evidence for reconstructing the settlement dynamics of the Gravettian - Epigravettian hunter-gatherers in this vast region up to the early Late Glacial, when the Prealpine and the Apennine foothills, along with the Dinarids, were persistently settled