Organ Pipe Cactus National Monument dominates this desert landscape, where the Ajo Range and Diablo Mountains form a dramatic high-relief boundary. This 2018 survey documents a remote wilderness defined by seasonal hydrology and significant geological landmarks. Notable features include the prominent Montezuma Head and Mt Ajo, the highest point in the monument. The map traces the intricate drainage patterns of Alamo Wash, Gu Vo Wash, and Pia Oik Wash, while permanent and semi-permanent water sources like Bull Pasture Spring and Wild Horse Tank indicate the vital lifeblood of this arid environment. A network of primitive paths, such as the Alamo Canyon Trail and Bull Pasture Trail, provides the primary means of navigating the steep canyons and washes like Arch Canyon and Canyon Diablo.
32 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