Oopart (out of place artifact) is a term applied to dozens of prehistoric objects found in various places around the world that seem to show a level of technological advancement incongruous with the times in which they were made. Ooparts often frustrate conventional scientists, delight adventurous investigators open to alternative theories, and spark debate. 17 Out-of-Place Artifacts Said to Suggest High-Tech Prehistoric Civilizations Existed In Search of the Fabled 1,000-ft White Pyramid of Xian in China 150,000-Year-Old Iron Pipes: Unraveling the Mystery In 1998, a story came out regarding a mysterious pyramid in China’s Qinghai Province near Mount Baigong. It claimed that three caves filled with ‘pipes’ that seem to lead to a nearby salt-water lake had been recorded. There
