The stable isotope results from the On Your Knees Cave remains were striking.

They indicated a diet heavily weighted toward marine protein — toward the fish, shellfish, and marine mammals of the coastal environment.

The specific isotopic signature was consistent with someone who had spent most of his life eating from the sea, dependent on the marine resources of the coastal world rather than the terrestrial resources of the interior.

He was, in the most literal chemical sense, a person of the coast.

The Man Ahead of Us