Geology
San Diego County, CA
Approximate location — plotted from published sources, not a site visit, and not a guarantee of access.
Anza-Borrego Desert State Park truck trail and hike to a WWII-era optical-grade calcite diggings area, with slot-canyon narrows, fault-shattered sedimentary rock, and panoramic views toward the Salton Sea. Signed interpretive panel at the S22 turnout introduces the historic mine road; the visitor pin is the trailhead parking, not a shaft.
| Region | San Diego County, CA |
|---|---|
| Coordinates (approx.) | 33.2811, -116.0964 |
| Management | Anza-Borrego Desert State Park (California State Parks) |
| Era | WWII optical calcite prospecting |
| Use | Hiking / high-clearance optional drive on mine road |
| Note | No open tourist mine shaft; surface diggings and canyons |
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Plan ahead. Leave no trace. Verify current access before traveling.