Fig. 3

a Overview of the western profile of the K squares excavated by Kaplan (1990), prior to the 2018–2019 excavation highlighting the difference between the higher- and lower-moisture sediments and Pleistocene/Holocene boundary. b West profile of squares L2a, L2b, and L3a. c Upper hearth feature (units H2, H3, and H4). d Unifacial point from the Late MSA