This countdown episode revisits ten mountains that ancient astronaut theorists believe may serve as extraterrestrial bases or portals. At number ten, Mount Adams in Washington gained fame when pilot Kenneth Arnold reported nine disc-shaped objects flying at 1,200 miles per hour before vanishing into the mountain in 1947—a sighting that introduced the term "flying saucer" to popular culture. Number nine features Mount Archuleta in New Mexico, where the nearby town of Dulce experienced numerous cattle mutilations and UFO reports in the 1970s. Geologist Phil Schneider claimed he worked on constructing a secret subterranean military base inside the mountain, fueling speculation about hidden alien facilities. The episode also promises to explore Adam's Peak in Sri Lanka, described as a divine portal, alongside other peaks associated with mysterious lights and unexplained phenomena.
Mainstream science offers less exotic explanations: the 1947 Mount Adams sighting likely involved misidentified aircraft or natural phenomena, while cattle mutilations in Dulce have been attributed to predators and scavengers by veterinary pathologists. No credible evidence supports the existence of the rumored Dulce base, and Schneider's claims remain unverified and disputed. Still, the episode compellingly documents how mountains have inspired otherworldly narratives across cultures for millennia, and Kenneth Arnold's sighting genuinely did shape modern UFO mythology regardless of what he actually saw. For viewers interested in how landscape intersects with folklore and Cold War-era conspiracy culture, these case studies offer fascinating windows into why certain locations become lightning rods for the unexplained.
Adam's Peak
Sri Lanka · Buddhist/Hindu/Islamic
Ancient Aliens claims that Adam's Peak is a sacred summit said to be a portal to other worlds and a hotspot for otherworldly phenomena. The site is believed to contain evidence of extraterrestrial contact and dimensional gateways.
Kachina Peaks
United States · Ancestral Puebloan
Ancient Aliens claims this mesa in New Mexico is believed to contain an alien base and is a center for otherworldly phenomena. The location is associated with UFO sightings and extraterrestrial activity in the American Southwest.
Mescalero Apache Reservation
United States · Native American
Ancient Aliens references a mesa in New Mexico believed to contain an alien base as part of its discussion of mysterious mountains and UFO activity.
Mount Chimborazo
Ecuador · Inca
Ancient Aliens examines Mount Chimborazo's significance to Inca astronomy and sacred geography, proposing that its selection as a sacred site indicates extraterrestrial astronomical knowledge.
Mount St. Helens
United States · Native American (Salish/Klickitat peoples)
Ancient Aliens claims Mount St. Helens was at the center of a famous UFO sighting and is a major hotspot for UFO activity. The volcano is believed to be associated with extraterrestrial phenomena and high-strangeness events.
Sedona UFO Hotspot
United States · Modern
Ancient Aliens suggests Sedona, Arizona is a hotspot for UFO sightings and otherworldly phenomena, potentially connected to mysterious peaks and vortex locations.