In 1969, a fossil hunter followed an eroded gully in northern Kenya: It revealed ancient skull fragments and helped establish Koobi Fora as one of the world’s most important fossil sites

The 1969 fossil discovery by Richard Leakey and H. Mutua at Koobi Fora, Kenya, initially speculated to belong to an early Homo species, has been reclassified as Paranthropus boisei. Known as KNM-ER 406, this fossil emerged from an eroded gully, emphasizing the value of natural landscapes in uncovering ancient hominins. This find showcased East Africa's rich paleontological heritage, solidifying Koobi Fora's significance in the exploration of our evolutionary past.

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