Boney Mountain in Ventura County, California is one of the highest peaks in the Santa Monica Mountains. The prominent mountain visible from Newbury Park, California is . It is also known as Boney Peak. The mountain contains four of the highest peaks in the coastal range of the Santa Monica Mountains: Boney Peak, Sandstone Peak, Exchange Peak, and Tri Peaks. The highest summit in the Santa Monica Mountains is Sandstone Peak (Mount Allen), situated less than a mile northeast of Boney Peak along the same ridge of volcanic rock. It is the top section of a mass of volcanic rock which solidified around 15 million years ago, and was later uplifted to its dominant position, overshadowing western Conejo Valley. The Chumash Native Americans have a long and deeply spiritual history of interaction at and near the mountain, and the peak is considered a sacred mountain to the Chumash people.