Extended Data Fig. 3: General view of the residual profile S1 from the cave entrance.
From: Late Middle Pleistocene Levallois stone-tool technology in southwest China
a, Photo taken from the interior of the cave, showing the location of the residual profile S1 at the south wall (marked by a rectangle with details shown in b and c). b, Photo showing details of the residual profile S1 at the south wall and the location of all OSL samples from layer 1 and layers 4–8. The details of layers 3–9 inside the yellow rectangle are shown in c. c, Photo showing the details of sedimentary layers 3–9 of group B, and the location of OSL samples. The stratigraphic layer numbers are shown in blue circles and the location of OSL samples are marked by yellow circles with sample names shown next to each of them. The dashed yellow lines in b and c show the boundaries between the layers.
