Mercer Caverns, Show cave in Murphys, California, US
Mercer Caverns features a network of underground chambers with natural limestone formations, stalactites, stalagmites, and flowstone structures throughout its 3,389-foot length.
Gold prospector Walter J. Mercer discovered the cave system in 1885, finding human remains of six individuals instead of the precious metal he sought.
The cavern earned recognition at the Paris World Fair for its display of aragonite frostwork, a rare formation that differentiates it from other caves.
Visitors can explore the cave through guided tours that descend 160 feet via 208 steps down and return through 232 steps up between natural and artificial entrances.
The cavern maintains mineral displays of flos feri, an unusual formation that sets it apart among the three public caves in Calaveras County.
GPS coordinates: 38.15140,-120.47800
Latest update: May 17, 2025 10:44
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