
Industrial clay extraction and high-mountain wilderness define this portion of the Santa Ana Mountains along the boundary between Riverside and Orange Counties. The settlement of Alberhill serves as a focal point for the regional economy, dominated by a Ceramic Factory and extensive Clay Pits. This resource-driven landscape transitions sharply into the protected lands of the Cleveland National Forest, where the terrain rises toward Trabuco Peak and Los Pinos Peak.
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7 editions found
1901 · Southern California Sheet No. 1
USGS Topo · 1:250,000
1901 · Elsinore
USGS Topo · 1:125,000
1901 · Riverside
USGS Topo · 1:62,500
1902 · Corona
USGS Topo · 1:125,000
1904 · Southern California Sheet No. 1
USGS Topo · 1:250,000
1942 · Lake Elsinore
USGS Topo · 1:62,500
1942 · Santiago Peak
USGS Topo · 1:62,500
1942 · Corona
USGS Topo · 1:62,500
1942 · Riverside
USGS Topo · 1:62,500
1943 · Corona
USGS Topo · 1:62,500