You're going to. beneath the surface of the earth shrouded in mystery and speculation

are some of the world's most secretive and intriguing structures,

deep underground military bases, also known as dums.

They're whispered about in hush tones.

And often the centerpiece of conspiracy theories and fiction.

But these subterranean complexes have captured the imagination of many.

But beyond the realm of myth and legend, there exists a fascinating and concrete reality.

Deep underground military bases are exactly what their name suggests.

Facilities located deep beneath the Earth's surface, designed for a variety of military

and governmental purposes.

They're constructed with dual aims of secrecy and security, and these bases are engineered

to withstand or operate independently of external conditions, including natural disasters or nuclear attacks.

The existence of such bases is not purely speculative.

Various governments around the world have acknowledged the presence of underground facilities meant for research,

military operation, and protective bunkers of key personnel in times of crises.

For example, in the United States, the Cheyenne Mountain Complex that's carved into the mountain

of the same name in Colorado is one of the well, well, is one of the most well known examples.

It was initially built during the Cold War as a defense bunker.

It was designed to be impervious to a nuclear blast and to

house military personnel and operations crucial for national security.

Built between 1961 and 1966, the Cheyenne Mountain Complex near Colorado Springs

in Colorado is one of the most secure and safe facilities in the country.

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