
Santa Ana Mountains ridge lines define the eastern border of Orange County in this mid-century survey, dominated by the towering heights of Santiago Peak and Modjeska Peak. The landscape transitions from the high peaks of the Cleveland National Forest down into the canyon communities and ranch lands to the west. Evidence of local spiritual and educational life is visible at the Ramakrishna Monastery and Trabuco Sch, while the region's agricultural and rural character is anchored by 4S Ranch and Starr Ranch. A network of rugged access routes, including the Main Divide Truck Trail and Santiago Truck Trail, provides the primary infrastructure through the steep terrain, connecting points like Old Camp and the Trabuco Guard Sta to the developing Modjeska settlement near the Modjeska Reservoir.
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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
1935 · El Toro
USGS Topo · 1:31,680
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