Ancient Astronaut Theorists conduct an experiment in the Blackcomb Glacier Ice Cave to locate signs of extraterrestrial life, in this clip from Season 18, "Ancient Aliens On Location: Evidence of Alien Life." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and next day on The ...

Ancient Astronaut Theorists examine a 2,000-year-old elongated skill with possible extraterrestrial ties, in this clip from Season 18, "Ancient Aliens On Location: Evidence of Alien Life." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and next day on The HISTORY Channel website at ...