Ancient Aliens · S19E20
The Top Ten Alien Petroglyphs
2023-09-15 · 41 min · 3.8 (2) · TMDB
Counting down the top ten alien petroglyphs around the world, from strange, human-like figures to flying craft and carvings of what appear to be astronauts. Could these mysterious carvings provide a record of extraterrestrial visitation?