Hardened Bunker
| ventilating shaft, underground facility
USA /
Maryland /
Thurmont /
World
/ USA
/ Maryland
/ Thurmont
ventilating shaft, underground facility
Built after 2012
Nearby cities:
Coordinates: 39°38'48"N 77°27'49"W
- Curtiss Wright Secret Underground Factory 316 km
- Cincinnati Subway (Abandoned) 611 km
- Shirley's Bay Research Centre 648 km
- CFB North Bay NORAD Regional Sector Air Operations Centre (R/SAOC) 764 km
- Bayou Choctaw Strategic Petroleum Reserve 1632 km
- West Hackberry Strategic Petroleum Reserve (SRR) Site 1805 km
- Cheyenne Mountain Air Force Station 2356 km
- Waste Isolation Pilot Plant WIPP 2495 km
- Archuleta Mesa 2587 km
- Kárahnjúkar Hydropower Plant 4810 km
- Catoctin Mountain Park 0.7 km
- South Mountain State Park 11 km
- Carroll Valley, Pennsylvania 13 km
- South Mountain 13 km
- Frederick County, Maryland 21 km
- Adams County, Pennsylvania 35 km
- Chambersburg, Pennsylvania 36 km
- Washington County, Maryland 41 km
- Franklin County, Pennsylvania 48 km
- Mason Dixon Line 93 km