'Oldest known drawing' found on tiny rock in South Africa

Etched with an "ochre crayon", the 73,000 year old drawing looks a little like a modern-day hashtag. from BBC News - World https...

Etched with an "ochre crayon", the 73,000 year old drawing looks a little like a modern-day hashtag.

from BBC News - World https://ift.tt/2Nb5ppu