1.2 *million* year old workshop for making cutting tools (hand axes) from obsidian found in Ethiopia. Until now it has been the consensus that making tools from obsidian was rare until the comparatively recent Middle Stone Age (mesolithic).

This was long before modern humans (homo sapiens) emerged, so this was a trained process by one of our ancestor hominins.
#archaeology #paleontology
iflscience.com/1-2-million-yea…

1.2-Million-Year-Old Obsidian Axe Factory Found In Ethiopia

Obsidian blades can be as sharp as diamond.

^{Ben Taub (IFLScience)}