Out of This World Cave Carvings | Ancient Aliens Deep in the heart of Central India, a series of mysterious cave carvings were discovered in July 2014—depictions so bizarre that they challenge everything we know about ancient civilizations. These enigmatic petroglyphs bear striking ...

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 ...