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Hike Calcite Mine Area, Anza-Borrego Desert State Park, California

The Calcite Mine Trail is located in Anza-Borrego Desert State Park, California. There is a 4-mile long old mining road which was newly graded in winter 2025 into the Santa Rosa Mountains to a parking spot. It’s still quite winding & steep, but a fairly easy trek. Once there there are several narrow ravine with slot canyons that hikers may explore. During World War Two the area was heavily mined for its high-grade calcite, a mineral then used to make bomb sights.
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