For eight to ten thousand years before written records, the Rumsen, Esselen, and Salinan peoples lived on the Salinas plain, the sloughs at its mouth, and the ranges beside it. They gathered acorns and seed, built tule boats, burned grassland, and traded across the mountains. Spanish missions broke their communities, and an anthropologist declared the Esselen extinct in 1899, yet the descendants remain, and in 2020 the Esselen regained land.
The popular figure of ten thousand years outruns the dated evidence, which reaches back about eight thousand years. Pre-contact population estimates vary widely by scholar, and the Chalon homeland and the group met by Portolá in the riverbed remain uncertain.


