Natural Nuclear Reaction Powered Ancient Geyser

Natural Nuclear Reaction Powered Ancient Geyser: "Although water and uranium are not unique to Oklo, no other natural reactor has ever been found.

'It’s very strange that something happened only once in nature,' Meshik said. 'But Oklo is very unique.'

He explained that, after the fission process had finished, a geological shift caused the Oklo reactor to sink a few miles below the surface – where it was preserved from erosion. A few million years ago, another shift brought the uranium deposits back to the surface."