The 1775-76 expedition of Juan Bautista de Anza made this site its one hundred first camp from Horcasitas, Sonora, Mexico. Anza brought 198 colonists, located for Spain the Presidio of San Francisco and Mission Dolores, and explored the extent of the bay. On April 3, 1776, Father Font noted in his expedition diary that from this point he could see the Sierra Nevada to the east, Sacramento Valley directly ahead, and the Diablo Range to the west.