The Post Pattern refers to a Paleo-Indian archaeological culture of artifacts found in northwest California dating between 9,000-13,000 years ago.
The Post Pattern is a local manifestation of the Western Pluvial Lakes Tradition.
It is believed that Post Pattern peoples were a pre-Hokan group.
The hypothetical entrance of peoples speaking Hokan languages dates from about 6,000-8,000 years ago in what is known as the Lower Archaic Period.
The pattern is named after Chester C. Post who in 1938 introduced it to the archaeological world.