Approximate location — plotted from published sources, not a site visit, and not a guarantee of access.
Preserved mining camp of the Castle Dome district—Arizona’s longest-worked silver-lead district—now a private museum ghost town with 50+ relocated and restored buildings, mill relics, and guided Hull Mine tours. Reached by a long desert road off US-95 north of Yuma through Sonoran Desert scenery beneath Castle Dome Peak.