2021 Map of Antioch South

About this map

Rose Hill Cem and the surrounding mining heritage of the Diablo Range define the western reaches of this 2021 survey. The landscape transitions from the dense residential grids of Antioch and Pittsburg into the preserved open spaces of the East Bay hills. Historical mining sites are represented by the former settlements of Somersville and Stewartville, which are now integrated into a network of hiking paths like the Nortonville Trl and Corcoran Mine Trl. Significant water infrastructure, including the Mokelumne Aqueduct and Contra Costa Canal, moves through the northern flats toward the Contra Loma Reservoir. South of Lone Tree Valley, the terrain becomes increasingly complex, marked by deep canyons such as Oil Canyon and Dark Canyon, and the thermal features of Marsh Creek Springs.