A mysterious drawing found in a cave is the oldest rock art in Patagonia. It is a drawing in the shape of a comb and it is not very clear what its meaning is.
It dates back to about 8,200 years ago, much earlier than previously believed. The rock art offers a rare glimpse into a culture that may have relied on that drawing to communicate valuable knowledge across generations during a period of climate change. The paper "offers a contribution to the debate about how humans dealt with climate change in the past," an archaeologist said.