New evidence for the Middle to Upper Palaeolithic transition interval in the Danube Gorges of the Balkans

Abstract

Over the past few years, new investigations in northern Bulgaria at the site of Bacho Kiro have revived the likelihood that the "Danube corridor" route served as a primary axis for the dispersal of modern humans into Europe. The association of modern humans with material remains of Protoaurignacian and Aurignacian provenance and/or transitional industries, would push the start of the dispersal across this region to 47 ka. Furthermore, fossil remains from the cave site of Peștera cu Oase in the Romanian hinterland of the Danube Gorges area of the north-central Balkans provide genetic evidence of admixtures between Neanderthal and modern human populations that might have taken place precisely along this transitory corridor. Yet, there is still relatively little in the way of evidence about, on the one hand, the last Middle Palaeolithic, and by proxy Neanderthal, and, on the other hand, the Initial and Early Upper Palaeolithic, and by proxy modern human, settlement of the region. Our recent investigations in the Danube Gorges area have brought to light two new sites, Tabula Traiana Cave and Dubočka-Kozja Cave, with Middle to Upper Palaeolithic deposits. The application of modern standards of recovery and recording have enabled us to apply a suite of cutting edge and state-of-the-art methodologies backed by extensive radiometric dating of these sites’ deposits. In this paper, we will present most recently obtained radiocarbon accelerator mass spectrometry (AMS) measurements, which allow us to discuss the chronological attribution of different levels of the two sites with more certainty. We will also offer further details regarding the knapped stone assemblages, including the results of use-wear analyses on a select number of artefacts. Finally, this evidence is integrated with the results obtained through the analyses of the faunal assemblages and by characterizing taphonomic factors that impacted their formation. Complementary data come from a relatively large pool of unidentifiable bone samples analyzed through the application of proteomic fingerprinting known as the Zooarchaeology by Mass Spectrometry (ZooMS), which has allowed us to better characterize the animal taxa composition of the faunal assemblages from the two sites and identify agents of bone accumulation. The results indicate a late continuation of the Middle Palaeolithic presence characterized by a Levallois-derived lithic industry at one of the two sites and the broadly contemporaneous appearance of the Early Upper Palaeolithic tools in the lithic assemblage of the other site. We discuss how the locations of the two sites in this specific landscape zone along the Danube might have influenced their respective uses.