Ohio’s Underground [google_map_easy id=”77″] Location: Dayton Ohio Functions: Unknown Levels: Unknown Tunnels to: Unknown Notes: Source: Location: Hammondsville Ohio Functions: Unknown Levels: Unknown Tunnels to: Unknown Notes: “…The possibility of another entrance into the subterranean world was discovered in Hammondsville, Ohio, in the spring of 1868. At a strip mine operated by Captain Edward Lacy, coal miner James Parsons was blasting a huge vein of coal out of the mountainside when his first explosion uncovered a large, smooth door. The slate-like […] Read More