The arid borderlands between Riverside and Imperial Counties are defined here by a series of prominent landforms and historic travel routes. The Mule Mountains dominate the northwestern portion of the map, giving way to the low-lying expanse of Coon Hollow and the Palo Verde Mesa. Further south, the Palo Verde Mountains rise towards the distinctive Thumb Peak, a landmark of the desert interior.
14 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.
1942 · Blythe
USGS Topo · 1:250,000
1945 · Cibola
USGS Topo · 1:62,500
1951 · Cibola
USGS Topo · 1:62,500
1952 · Mc Coy Spring
USGS Topo · 1:62,500
1952 · Palo Verde
USGS Topo · 1:24,000
1952 · Ripley
USGS Topo · 1:24,000
1953 · Palo Verde Mountains
USGS Topo · 1:62,500
1954 · Salton Sea
USGS Topo · 1:250,000
1955 · Salton Sea
USGS Topo · 1:250,000
1955 · Cibola
USGS Topo · 1:24,000