
The Santa Rita Mountains and the Empire Mountains converge here at the high desert terrain of southern Arizona. Dominated by the peak of Mount Fagan, the landscape is defined by its deep mining history and complex water management. Evidence of the region's mineral wealth is scattered across the slopes, from the southern Helvetia Mines to the Cuprite Mine and California Mine further north. These industrial sites are interspersed with a network of cattle tanks such as Duck Tank and Missile Tank, essential for survival in this arid environment.
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1904 · Patagonia
USGS Topo · 1:125,000
1904 · Tucson
USGS Topo · 1:125,000
1905 · Patagonia
USGS Topo · 1:125,000
1905 · Tucson
USGS Topo · 1:125,000
1926 · Helvetia
USGS Topo · 1:62,500
1948 · Tucson
USGS Topo · 1:62,500
1956 · Nogales
USGS Topo · 1:250,000
1956 · Tucson
USGS Topo · 1:250,000
1957 · Tucson
USGS Topo · 1:62,500
1957 · Rincon Valley
USGS Topo · 1:62,500