Pennsylvania’s Underground [google_map_easy id=”85″] Location: 50 miles south of Pittsburgh Pennsylvania Functions: Unknown Levels: Unknown Tunnels to: Unknown Notes: About 50 miles south of Pittsburgh in the first range of the Allegheny mountains, George A. Lehew reportedly found a cavern which he penetrated for over a mile, the passages becoming increasingly wider. He descended at about a 45-degree angle until reaching a room in which he found a 6-ft.-wide thermal bore, a perfectly circular shaft with smooth glazed walls that had apparently been […] Read More