The #MiddleStoneAge in #Namibia's desert. The Namib Sand Sea, a hyperarid landscape of towering dunes, once held a small freshwater lake fed by an ancient river and surrounded by a rich record of stone tools from the #African MSA.
'Our results show that the lake was present at Narabeb at some point between 231,000 ± 20,000 and 223,000 ± 19,000 years ago and again about 135,000 ± 11,000 years ago.'