Castle Mine Road is a hiking, biking, and horse trail in Yuma County, Arizona. It is within Kofa National Wildlife Refuge. It is 2.1 miles long and begins at 1,280 feet altitude. Traveling the entire trail is 4.1 miles with a total elevation gain of 194 feet. The Castle Dome Mine Museum can be seen along the trail. There is also a mineshaft along the trail.
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