1967 Map of Black Star Canyon

About this map

Sierra Peak dominates the northern reaches of the Santa Ana Mountains, marking the rugged divide where Orange and Riverside counties meet. This terrain, captured in 1967 and updated with 1978 aerial revisions, reveals a landscape defined by deep canyons and the engineering of the Santiago Reservoir. The map documents a significant history of resource extraction, noting the Santiago Coal Mine, Black Star Coal Mine, and Claymont Clay Mine, which reflect the region's industrial past. Evidence of early habitation and high-country outposts can be seen at Beeks Place and Hidden Ranch. Along the northern border, the Santa Ana River flows parallel to the Riverside Freeway, signaling the encroachment of urban development from Anaheim and Yorba Linda into the foothills of the Cleveland National Forest.