The sketch was drawn on a tiny piece of rock some 73,000 years ago by hunter-gatherers in South Africa. The abstract design has a vague resemblance to a popular symbol of the internet age — the hashtag. A stone flake…
The sketch was drawn on a tiny piece of rock some 73,000 years ago by hunter-gatherers in South Africa. The abstract design has a vague resemblance to a popular symbol of the internet age — the hashtag. A stone flake…