Donovan Roche 4:30 p.m., May 4
Posted November 19, 1998
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Hike to Anza-Borrego's Calcite Mine, where optical-grade calcite crystals were extracted during World War II
Thousands of years of cutting and polishing by water and wind erosion have produced the chaotic rock formations and slotlike ravines you'll discover in Anza-Borrego's Calcite Mine area. During World War II, this was an ...