
The San Andreas Rift Zone dominates the structural character of this landscape at the boundary of Kern Co and Ventura Co in the early 1990s. This survey illustrates a complex intersection of conservation lands and geologic activity, with the Bitter Creek National Wildlife Refuge and the Los Padres National Forest occupying much of the high-elevation terrain. The presence of Santiago Corrals and Valle Vista Campground suggests the area's use for recreation and ranching amid the dry canyons of San Emidio. Significant drainage systems like Santiago Creek and Ballinger Canyon carve through the sedimentary layers, while an isolated Oil Well near the northern border points to the industrial potential of the underlying geology. Modern access is marked by Noroeste Road, which traverses the varied elevations between the rift valley and the Blue Ridge.
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This is the sole edition of this map. No revisions or reprints were ever made.
1903 · Mt. Pinos
USGS Topo · 1:125,000
1910 · Buena Vista Lake
USGS Topo · 1:125,000
1912 · Buena Vista Lake
USGS Topo · 1:125,000
1931 · Pentland Junction
USGS Topo · 1:31,680
1931 · Hayes Ranch
USGS Topo · 1:31,680
1933 · Hayes Ranch
USGS Topo · 1:31,680
1934 · Pentland
USGS Topo · 1:31,680
1942 · Eagle Rest Peak
USGS Topo · 1:24,000
1942 · Ballinger Canyon
USGS Topo · 1:24,000
1943 · Maricopa
USGS Topo · 1:31,680