Preliminary results from the new excavations of the Middle and Upper Palaeolithic levels at Ortvale Klde-north chamber (South Caucasus Georgia)

This paper reports the results of the 2006 fieldwork carried out in the northern chamber: three Middle Palaeolithic units and one Upper Palaeolithic unit have been observed in several test pits inside the cave and on the slope in front of the cave. Middle Palaeolithic lithic assemblages are composed of elongated points and various core technologies have been described, close to what is observed at Drjujula and Bronze caves. Apparent correlations between the stratigraphic sequences of the two chambers and associated lithic and bone assemblages are discussed. Several hypotheses on the type of human occupations in relation to the morphology of the two chambers of the cave are presented. The very different nature of the sequences in the northern and southern chambers possibly imply differences in both intensity and timing of human occupation of each chamber, as well as some differences in site formation processes. The main test pit at the base of the sequence yielded lithics that have some different traits when compared to those observed at the base of the sequence in the southern chamber. This could signify an older age for these base levels, but also very different occupation modes in the two chambers, as also indicated by the differential faunal preservation. However, in contrast to the lithic assemblages, the faunal assemblages of the base of the sequence in each of the two chambers do not show differences in subsistence strategies and hence suggest consistent subsistence behaviour.