Oklo

This article is about the region in Gabon. For the company, see Oklo Inc.
The natural nuclear fission reactors of Oklo:
  1. Nuclear reactor zones
  2. Sandstone
  3. Uranium ore layer
  4. Granite

Oklo is a region near Franceville in the Haut-Ogooué province of Gabon. Several natural nuclear fission reactors were discovered in the uranium mines in the region in 1972.