Unearthing the Secrets Beneath Denver International Airport: Fact or Fiction?

Denver International Airport (DIA) has been a hub of conspiracy theories and speculation since its construction began in 1993. From the apocalyptic murals to the gargoyles guarding the baggage claim area, DIA has long been a topic of intrigue. However, the most compelling enigma remains the question of what might be hidden beneath the airport. In this article, we will delve into the depths of DIA and explore the various theories surrounding the subterranean secrets beneath one of the world’s busiest airports.

A Massive Underground Bunker

One of the most popular theories about DIA is that there is a massive underground bunker hidden beneath the airport, intended to serve as a safe haven for the world’s elite during a global catastrophe. This theory stems from the airport’s massive size, its remote location, and the extensive network of tunnels that exists beneath it (1). The bunker is said to be capable of housing thousands of people, as well as providing food, water, and other essential resources for an extended period of time (2). Some speculate that this underground facility is part of a larger network of secret bunkers throughout the United States, such as the Greenbrier Hotel’s undisclosed bunker in West Virginia, built during the Cold War (3). While no concrete evidence has emerged to support these claims, the idea of a hidden bunker beneath DIA continues to captivate the public’s imagination.

A Secret Military Base

Another theory suggests that DIA is home to a secret military base, with the airport acting as a cover for covert operations. According to this theory, the underground facility houses experimental aircraft, advanced weaponry, and other cutting-edge military technology (4). Proponents of this theory point to the airport’s location near Buckley Air Force Base and its proximity to Cheyenne Mountain, which houses the North American Aerospace Defense Command (NORAD) (5). They argue that the airport’s vast underground network could provide a convenient and hidden transportation system for military personnel and equipment. However, there has been no definitive evidence to support these claims, leaving this theory in the realm of speculation.

A New World Order Headquarters

Some conspiracy theorists believe that DIA is the headquarters for the New World Order, a secretive group of global elites seeking to establish a single world government. This theory is fueled by the mysterious murals adorning the walls of the airport, which some interpret as depicting a post-apocalyptic world and the rise of a new global order (6). The alleged underground facility is thought to be a command center for this group, where they can plan and execute their nefarious agenda away from prying eyes (7). Despite the sensational nature of this theory, no concrete evidence has emerged to support it, leaving it as little more than a thrilling work of fiction.

An Ancient Alien Base

The idea that DIA is built atop an ancient alien base is a more outlandish theory, but it has gained traction in certain circles. According to this idea, the airport was constructed to cover up the existence of extraterrestrial technology and artifacts (8). The underground facility is said to house evidence of advanced alien civilizations, including spacecraft and otherworldly technology. This theory is largely based on the airport’s proximity to the alleged UFO hotspot of the San Luis Valley, as well as the mysterious symbols and art found throughout DIA (9). However, as with the other theories, there is no concrete evidence to back up these claims, and it remains firmly in the realm of science fiction.

A Massive Archaeological Discovery

Another intriguing theory posits that a significant archaeological discovery was made during the construction of DIA, and the underground facility was built to study and preserve the findings. Some suggest that the discovery could be related to a lost civilization or ancient artifacts of immense historical significance (10).

This theory is supported by the fact that the airport was built on a vast, relatively undisturbed area of land, which may have been the site of ancient settlements or other significant archaeological finds. While there have been no public announcements of any such discoveries, proponents of this theory argue that the secrecy surrounding the underground facility could be due to the sensitive nature of the findings (11).


The mystery surrounding what lies beneath Denver International Airport has captivated the public’s imagination for decades. While theories range from underground bunkers and secret military bases to ancient alien artifacts and hidden archaeological treasures, the truth remains elusive. Despite the lack of concrete evidence, these theories continue to spark curiosity and wonder about the secrets that may lie beneath one of the world’s busiest airports.

  1. Brammer, R. (2018). “Denver International Airport: A Conspiracy Theory Magnet.” History. https://www.history.com/news/denver-international-airport-conspiracy-theories
  2. Keene, A. (2017). “The Denver Airport Conspiracy.” The Vintage News. https://www.thevintagenews.com/2017/09/27/the-denver-airport-conspiracy/
  3. Jacobs, H. (2014). “The Greenbrier: The Cold War Bunker That Became a Luxury Resort.” Business Insider. https://www.businessinsider.com/the-greenbrier-cold-war-bunker-2014-7
  4. Swancer, B. (2016). “Mysterious Underground Bases at Denver International Airport.” Mysterious Universe. https://mysteriousuniverse.org/2016/09/mysterious-underground-bases-at-denver-international-airport/
  5. Ventre, M. (2007). “Denver’s Airport: A Conspiracy Theory Haven?” NBC News. http://www.nbcnews.com/id/17783984/ns/travel-news/t/denvers-airport-conspiracy-theory-haven/
  6. Stone, M. (2014). “Denver Airport Conspiracy: The Definitive Guide.” Skeptoid. https://skeptoid.com/episodes/4496
  7. Lankford, R. (2021). “The New World Order Conspiracy: Fact or Fiction?” The Conversation. https://theconversation.com/the-new-world-order-conspiracy-fact-or-fiction-157838
  8. Redfern, N. (2019). “The Denver Airport UFO Connection.” Mysterious Universe. https://mysteriousuniverse.org/2019/11/the-denver-airport-ufo-connection/
  9. Murphy, J. (2016). “The San Luis Valley: America’s UFO Hotspot.” The Guardian. https://www.theguardian.com/travel/2016/jul/06/san-luis-valley-colorado-america-ufo-hotspot
  10. Wenz, J. (2021). “Denver International Airport: An Archaeological Enigma?” Atlas Obscura. https://www.atlasobscura.com/articles/denver-international-airport-archaeological-enigma
  11. Newkirk, G. (2015). “The Archaeological Mysteries of Denver International Airport.” Week in Weird. http://weekinweird.com/2015/02/20/the-archaeological-mysteries-of-denver-international-airport/

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