DIA conspiracy lore about underground bunkers and symbols

Since its 1995 opening, Denver International Airport has been the subject of numerous conspiracy theories claiming secret underground bunkers, occult symbolism in airport art, and runway alignments with controversial symbols. These claims have been widely circulated online and in popular media; airport officials and investigative reporting have repeatedly disputed or found no evidence for the most extraordinary assertions. The conspiracy lore remains a prominent part of DIA's public reputation and local storytelling, presented by proponents as fact by some and described by others as debunked rumor. The airport's official responses and investigative articles addressing these claims are part of the public record.