The disappearance of Tupolev Tu-144 Flight 410, 1978 - Conclusion: Assumed missing. Cause: Electromagnetic interference with navigation systems over Siberia. Flight disappears from communication and radar. - Reason - 1984 - Excavations in nearby areas uncover extraterrestrial artefacts with extinct insectoid creatures inside, embedded in the folk lore of the local region. The site causes hallucinations and strange visions. The pilots might have downed the flight flying over the artefact.