Latitude / Longitude:
32°57′54″N 114°27′49″W / 32.96500°N 114.46361°W / 32.96500
203 ft (62 m)
Mountain (NO DST) (UTC-7)
Castle Dome Landing, Arizona (also Castle Dome City) is a ghost town in the Castle Dome Mountains of Yuma County in the U.S. state of Arizona. It was first settled as a transport depot and mining camp around 1863 in what was then the Arizona Territory.
The remains of Castle Dome Landing, once on the banks of the Colorado River, are now submerged beneath the Imperial Dam reservoir in Martinez Lake. The property that was previously Castle Dome town and mining camp was purchased in 1994 by Allen and Stephanie Armstrong, and turned into the Castle Dome Museum.
As with many mining boomtowns, mining activity diminished, and the Castle Dome Landing post office closed down on June 16, 1884. The mines reopened in 1890, and the area became a significant source of lead for both World War I and World War II. In particular, when the Arizona Lead Company reopened the mines in 1943, they were able to produce significant amounts of lead in order to meet wartime demands.