
Kofa National Wildlife Refuge and the northern reaches of the Yuma Proving Ground meet in this desert landscape, defined by the prominent uplift of Neversweat Ridge. This 1990 provisional edition documents a rugged corridor where military testing grounds and protected wilderness converge. The map preserves the specific locations of historic mineral exploration, most notably at the Silver Prince Mine and various Prospects and a Mine Shaft scattered throughout the rocky elevations. The wide, dry expanse of King Valley dominates the western half of the sheet, crossed only by primitive 4wd tracks. These trails provide the only access through the arid terrain, connecting remote landmarks like the Tank in the northern mountains to the various mining claims that once sought fortune in the copper and silver veins of this isolated corner of Yuma County.
15 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.
1928 · Norton
USGS Topo · 1:62,500
1929 · Norton
USGS Topo · 1:62,500
1930 · Stoval
USGS Topo · 1:62,500
1942 · Vicksburg
USGS Topo · 1:250,000
1950 · Stoval
USGS Topo · 1:62,500
1953 · Ajo
USGS Topo · 1:250,000
1954 · Phoenix
USGS Topo · 1:250,000
1955 · Roll
USGS Topo · 1:62,500
1957 · Ajo
USGS Topo · 1:250,000
1957 · Phoenix
USGS Topo · 1:250,000