Discovered in a cave in southern Poland in the 1980s, this prehistoric boomerang was made from a mammoth tusk and estimated to be 18,000 years old. But new analysis has uncovered that the boomerang is between 39,000 to 42,000 years old, making it the oldest known boomerang in history. [900×758]

Discovered in a cave in southern Poland in the 1980s, this prehistoric boomerang was made from a mammoth tusk and estimated to be 18,000 years old. But new analysis has uncovered that the boomerang is between 39,000 to 42,000 years old, making it the oldest known boomerang in history. [900×758]

by alecb