Rock art of the Chumash people
Chumash rock art is a genre of paintings on caves, mountains, cliffs, or other living rock surfaces, created by the Chumash people of Southern California. Pictographs and petroglyphs are common through interior California, the rock painting tradition thrived until the 19th century.
Source: Wikipedia — Rock art of the Chumash people (CC BY-SA 4.0)