…other, Ngorongoro Conservation Area (cropped and reversed, after photo Pedrito, wikipedia); (bottom) the handaxe in situ (cropped, modified, after Diez-Martin, Sánchez Yustos, et al., 2015:Fig. S30). Olduvai Gorge, Tanzania. Middle Bed II, MNK Main site, between Tuff IIC and Tuff…

…ar Range on the west (Laguna or Jacumba Mountains), to the Traverse Ranges (see Wikipedia) and the Mojave Desert/Coachella Valley in the north, to western edge of Arizona in the east, and the Colorado River delta at the Sea of Cortez in the south. It is a subset of the vast Sonor…