Clarksville Cave

Clarksville Cave is a cave in Clarksville, Albany County, New York.

Clarksville Cave is a horizontal cave system with 4800 ft of passage and three entrances.

History
The history of Clarksville Cave is one of the longest of any cave in New York. The earliest known petroglyph found in the cave is from 1811, and a letter describing the cave was written by Teunis Houghtaling in 1818.