United States & Territories Underground
North American Underground
North American Underground Canadian Underground Greenland Underground U.S. & Territories Underground
Greenland Underground “The ice above is merely a shield for the machinery below. In the Arctic, the...
Canada Underground “The vast Canadian wilderness serves as more than just a buffer; it is the primary...
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...