1959 Map of Las Trampas Ridge

About this map

St Marys College and the surrounding hills of Contra Costa and Alameda Counties are depicted during a period of transition, where suburban expansion meets the sharp relief of the East Bay. The map captures the developing residential patterns of Lafayette, Alamo, and Moraga, contrasting them with the high, undeveloped elevations of Rocky Ridge and Las Trampas Peak. The presence of the Southern Pacific railroad line through San Ramon Creek valley reflects the area's older transportation roots, while new schools like San Ramon Valley HS and Stone Valley Sch mark the post-war population growth.