United States & Territories Underground
U.S. Underground
Kentucky Underground “In Pineville, the ‘lumberjack’ who stepped out of a solid rock wall wasn’t a ghost—he...
New Jersey Underground Location: Northern New Jersey Functions: Unknown Composed of: Unknown Levels: Unknown Tunnels to:...
Louisiana Underground “Beneath the cypress swamps and shifting bayous of the Gulf Coast lies a salt-cured secret—a...
North Dakota Underground Location: Bismark – Aberdeen – Napoleon – North Dakota Functions: Main Base as...
Texas Underground Location: Alpine Texas Location: Unknown Levels: Unknown Tunnels to: Unknown Notes: The ‘haunted‘ Refugio mine in...
Tennessee Underground Location: Chattanooga Tennessee Functions: Unknown Levels: Unknown Tunnels to: Unknown Notes: An unusual cave discovery...
South Dakota Underground Location: ? Jim River Valley South Dakota Functions: Unknown Composed of: Unknown Levels: Unknown Tunnels...
Pennsylvania Underground Location: 50 miles south of Pittsburgh Pennsylvania Functions: Unknown Levels: Unknown Tunnels to: Unknown Notes: About 50 miles...
New Mexico Underground Location: Albuquerque New Mexico Functions: Unknown Composed of: Unknown Levels: Unknown Multiple – 1 -? Tunnels...