Lion Head Mountain anchors this arid landscape in Imperial County, defining the topography of a region marked by deep drainage patterns and seasonal water scarcity. The map illustrates the minimal human imprint on this desert terrain in the early 21st century, where survival and transit are tied to the few named points of interest. One such critical resource is Salvation Spring, located in the southeastern corner, serving as a rare hydrological marker. Access through this environment is primarily facilitated by the Milano-Pegleg Well Rd, which cuts across the southern portion of the quadrangle. This 2012 survey captures the relationship between natural landmarks and the limited infrastructure required to navigate the Imperial County backcountry.
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This is the sole edition of this map. No revisions or reprints were ever made.
1940 · Iris
USGS Topo · 1:62,500
1940 · Iris Pass
USGS Topo · 1:62,500
1945 · Iris Pass
USGS Topo · 1:62,500
1945 · Iris
USGS Topo · 1:62,500
1953 · Chuckwalla Spring
USGS Topo · 1:62,500
1953 · Acolita
USGS Topo · 1:62,500
1954 · Salton Sea
USGS Topo · 1:250,000
1955 · Tortuga
USGS Topo · 1:24,000
1955 · Salton Sea
USGS Topo · 1:250,000
1956 · Iris
USGS Topo · 1:24,000