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A privately owned California cave, kept secret for decades, shares its mysteries
The first person to peer into the 18-inch crack in ... It narrowly avoided destruction when a neighboring quarry looked into mining the cave for its indigo-blue marble and calcite.
The New York Times1mon
MINERS' NARROW ESCAPE.; Entombed by a Cave-In, They Cut Their Way to an Air Shaft and Reach the Surface.
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