The intricate tunnels and cave systems throughout the American Southwest (Arizona, Colorado, New Mexico, and Utah) have been used for sacred Native American ceremonies and military programs alike. Piece together the ancient cultures of Hopi and Zuni with eyewitness accounts, and unlock the secrets of the Four Corners area and its history of extraterrestrial influence.A vast subterranean complex of tunnels and caves in the American Southwest holds great importance to indigenous people, extraterrestrial civilizations, and secret military programs staged within the earthly hollows. Zuni and Hopi folklore tells us of the ancient people who live in these grottos, which have long helped human civilizations to survive and thrive. They also tell us of powerful energetic nodes in North America that once served as sacred sites but are now occupied by heavily armed military forces. Our experts try to unravel the secrets of the Four Corners region by examining folklore, eyewitness accounts, and archeological site discoveries. Did extraterrestrials influence human history?