E Erik New member Mar 4, 2011 #1 Close to a small lake in Africa in the Rift valley I find 1 to 2 cm flat obsidian stones. Further on the mountain I found stones twice as big. It could have been used as spearhead or cutting tool. How can I find out more?
Close to a small lake in Africa in the Rift valley I find 1 to 2 cm flat obsidian stones. Further on the mountain I found stones twice as big. It could have been used as spearhead or cutting tool. How can I find out more?
