2018 Map of Las Trampas Ridge

About this map

Las Trampas Ridge dominates this 2018 survey of the East Bay, separating the suburban developments of Lafayette, Walnut Creek, and Alamo from the more secluded drainages of Bollinger Canyon Cr and Miller Canyon. The map reveals the sophisticated interface between urban growth and protected natural spaces, specifically featuring the Eugene O'Neill National Historic Site and the Iron Horse Regional Trail. These corridors preserve the region's cultural and transit history amidst modern expansion. From the residential streets of Danville to the high points of Las Trampas Peak and Ramage Peak, the map documents the complex topography and hydrology that shape the boundary between Contra Costa and Alameda counties. Waterways like San Ramon Cr and San Leandro Cr provide a framework for the valley floor, while the San Leandro Tunnel indicates the underlying infrastructure necessary to support the communities of Oakland and San Ramon.