The Klerksdorp Spheres: These puzzling little spheres were found by miners in South Africa in Pyrophyllite-type, crystallized rock deposits. The origins of these metallic spheres are unknown and around 0.5 to 10 cm in diameter. Some have concentric grooves running along their equators and seem to have been made by intelligent design. The crazy part however, is that the Pyrophyllite deposits they were found in were dated to be around 2.8 billion years old! This beats out the current estimate of intelligent life by, oh, a few billion years!