1921 Map of Triunfo Pass

About this map

Santa Monica Mountains dominate the southern half of this landscape, descending sharply to the Pacific Ocean along a coast defined by Dume Pt. This survey, based on data from 1900, reveals a sparsely populated region of Ventura and Los Angeles counties before modern coastal development. Small agricultural outposts and stage stops like Newbury Park and Triunfo anchor the inland valleys, connected by primitive roads through the El Conejo and Russell Valley. The complex topography is marked by significant peaks such as Sandstone Pk and Castro Pk, while deep drainage systems like Arroyo Sequit and Zuma Canyon carve their way to the sea. The map also delineates historical land divisions, including the San Bernardino Base Line and boundaries for large ranchos like Guadalasca and Las Virgenes.