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Ancient civilizations & archaeology

Lost technologies, ancient astronauts and extraordinary historical claims tested against material culture, dating, documents and excavation evidence.

Ancient engineering can be astonishing without requiring a lost or non-human technology. We distinguish genuine open questions about historical technique from claims that infer extraordinary builders simply because a modern observer finds the achievement difficult to imagine.

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Contradicted Reviewed Sep 29, 2026

Were the Egyptian pyramids built by extraterrestrials?

The alien-builder claim is contradicted by archaeological and documentary evidence from the Egyptian construction system itself: Fourth Dynasty support infrastructure at Giza, quarry and transport records, and Merer's logbook describing limestone transport to Khufu's pyramid complex while the project was active. Some engineering details remain debated; that is not evidence for extraterrestrial builders.

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