Beneath Archuleta Mesa near the town of Dulce, conspiracy lore claims there is a secret underground base jointly run by humans and extraterrestrials. Stories describe vast tunnels, genetic experiments, and battles between aliens and military personnel in the late 1970s. The legend began with claims from Paul Bennewitz, who believed he intercepted UFO communications near Kirtland AFB, and was later fueled by whistleblower accounts. Dulce remains one of the most talked-about UFO conspiracy sites in the world, drawing researchers and curious visitors alike.