Mammoth Cave

Mammoth Cave (1) is in Edmondson county, near the Green River, in the centre of Kentucky. It is 10 miles long, from 40 to 300 feet wide, and its highest shaft, Lucy's Dome, is 300 feet. It is divided into numerous chambers and grottoes, in which are to be found many interesting blind fish and crustaceans. Branches of a subterranean river run through some of these. (2) There is also a large cavern called by this name, containing a subterranean lake, in California 12 miles from San Andreas.