Loading map...

1955 Map of Eylar Mtn

Name: 1955 Topographic Map of Eylar Mtn
Creator: U.S. Geological Survey
Published: 1972
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1972

About this map

Arroyo Mocho and Arroyo Valle carve through the high ridgelines of the Diablo Range along the border of Alameda and Santa Clara counties. This mid-century survey reveals a landscape defined by seasonal watercourses and remote outposts, featuring several established camps such as Hays Camp, Mowry Camp, and Colorado Camp. The terrain is characterized by a network of steep elevations like Valpe Ridge and the Burnt Hills, with the highest point marked at VABM 4089 Mocho.

A system of jeep trails provides the primary access to these isolated flats and gulches, connecting landmarks like Sherman Flats and Strawberry Flat. The map documents numerous named springs and minor drainages, including Banta Spring and Sulphur Springs Gulch, which were critical for the small-scale ranching or seasonal operations indicated by the presence of Graves and Camp Bessie in the canyons.