Organ Pipe Cactus National Monument dominates this desert landscape, defined by the stark rise of the Ajo Range and the high summit of Mount Ajo. This 2014 survey captures a terrain shaped by deep canyons and intermittent water sources essential to the local environment, such as Bull Pasture Spring and Wild Horse Tank. The geography is characterized by distinct geological landmarks like the Montezuma Head and the Ajo Window, highlighting the complex topography of the Diablo Mountains and the surrounding Valley of the Ajo. Settlement and infrastructure are minimal, represented primarily by the primitive Well Rd passing through Tonoka Valley. Drainage patterns are clearly marked by several large washes, including Pia Oik Wash and Gu Vo Wash, which channel seasonal runoff through this arid region of the Gu Vo District.
29 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.
1953 · Ajo
USGS Topo · 1:250,000
1954 · Sonoyta
USGS Topo · 1:250,000
1957 · Ajo
USGS Topo · 1:250,000
1958 · Ajo
USGS Topo · 1:250,000
1962 · Ajo
USGS Topo · 1:250,000
1963 · Ajo
USGS Topo · 1:250,000
1963 · Mt. Ajo
USGS Topo · 1:62,500
1963 · Lukeville
USGS Topo · 1:62,500
1963 · Kino Peak
USGS Topo · 1:62,500
1963 · Lukeville
USGS Topo · 1:250,000