Underground Facilities Database

United States of America

Documented underground facilities, continuity of government sites, and subterranean infrastructure within the United States

4

Facility Records

1

Confirmed Grade

COG

Primary Function

Facility Records — United States

UF-USA-0001 CONFIRMED
The Greenbrier Bunker

The Greenbrier Bunker

Project Greek Island

Status

Decommissioned

Location

White Sulphur Springs, WV

Built

1958–1961

Depth

720 ft

112,000 sq ft · 1,100 capacity View Facility Record →
UF-USA-0002 CORROBORATED
Mount Weather EOC

Mount Weather EOC

FEMA / DoD Continuity of Government

Status

Active — Operational

Location

Bluemont, Virginia

Surface Area

564 acres

Function

COG / Disaster Command

FEMA · DoD Joint View Facility Record →
UF-USA-0003 CORROBORATED
Raven Rock Mountain Complex

Raven Rock Mountain Complex

Site R — The Underground Pentagon

Status

Active — Operational

Location

PA-MD Border

Surface Area

650 acres

Function

DoD Emergency Command

DoD · Joint Chiefs View Facility Record →
UF-USA-0004 CORROBORATED
Olney Federal Support Center

Olney Federal Support Center

FEMA Secure Communications Facility

Status

Active — Operational

Location

Olney, Maryland

Surface Area

Not publicly confirmed

Function

Secure Comm Hub

FEMA · Secure Communications View Facility Record →
UF-USA-0005 CORROBORATED
CHEYENNE MOUNTAIN COMPLEX

Cheyenne Mountain Complex

NORAD Combat Operations Center

Status

Active — Operational

Location

El Paso County, Colorado

Depth

~2,000 ft in granite

Function

Alternate Command — NORAD

DoD · NORAD / USNORTHCOM View Facility Record →