
Hot Springs Mtn and San Ysidro Mtn dominate this high-altitude section of the Cleveland National Forest, where the complex drainage systems of Cañada Agua Caliente and the various forks of Borrego Palm Canyon shape the landscape. The map records several small settlements and heritage sites, including the community of San Ignacio and the nearby San Ignacio Cem, alongside the remote Eagles Nest and Los Tules. The network of water sources such as Shingle Spring, Rainbow Spring, and Blackwater Hole underscores the importance of reliable hydrology in this arid upland environment. For those tracing historical transit, the Pacific Crest National Scenic Trl winds through the western reaches, while numerous named access routes like Camino San Ignacio Rd and Qa Wish Rd connect the scattered homesteads and peaks.
52 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1903 · Ramona
USGS Topo · 1:125,000
1904 · Indio
USGS Topo · 1:125,000
1904 · Southern California Sheet No. 2
USGS Topo · 1:250,000
1931 · Vallecito
USGS Topo · 1:125,000
1939 · Warner Springs
USGS Topo · 1:62,500
1939 · Santa Ysabel
USGS Topo · 1:62,500
1939 · Borrego
USGS Topo · 1:62,500
1941 · Clark Lake
USGS Topo · 1:62,500
1942 · Clark Lake
USGS Topo · 1:62,500
1942 · Borego
USGS Topo · 1:62,500