| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
| Wyandotte Cave |
| one of the largest natural caverns in the United States, S Ind., W of New Albany; discovered in 1798. There are 23 mi (37 km) of passages and several large and beautiful chambers on five levels. Saltpeter was mined there until the middle of the 19th cent. |
| The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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