Question of the integrity of the ondratice l/želeč surface collection

Excavations during 2010-2012 produced a new early Upper Palaeolithic site Želě I in Central Moravia. Three settlement horizons were distinguished at this site. The oldest one, predating the cold Heinrich event 4, dated by ¹⁴C AMS to 42-45 ky BP cal, relates to the main cultural layer in the largest trench Zel-4a with three hearths. The younger horiAzon, which was dated to 36 ky BP cal, is represented by one soliflucted hearth in trench Zel-12b and the youngest settlement episode represented by a feature of unknown function in trench Zel-12a, was dated by 14C AMS to 34 ky BP cal. The existence of three occupational events at the site supports the claim that a collection of surface finds from a neighbouring site Ondratice l/Želeč presents a mixture of lithic assemblages coming from different cultural layers.