Calcite extracted from these trenches during WWII was used in the manufacturing of Norden bombsights.

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Calcite Mine and Slot Canyon

Hike an amazing slot canyon, visit an abandoned calcite mine, and enjoy panoramic desert views.

Distance from downtown San Diego: 104 miles. Allow almost 3 hours’ driving time (Anza-Borrego Desert State Park). From Ramona, drive east on Hwy 78, turn left on Hwy 79, right on San Felipe Road (S2), ...


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