In western China, an underground nuclear test reveals shocking geological anomalies—and scans uncover a massive pyramid-like structure buried deep beneath the earth, raising the question of whether something not made by humans lies below. #AncientAliens | Ancient Aliens

Construction workers unearth evidence of a long-lost civilization in China. | Ancient Aliens

Ancient astronaut theorists ponder whether the texts found in this ancient Egyptian temple describe a past natural event or a purposeful attack from an otherworldly civilization. | Ancient Aliens: Out of This World Moments

Ancient astronaut theorists explain the hollow earth theory. #ancientaliens | Ancient Aliens