Alternative historical model of a technologically advanced Tartarian civilization and a 19th-century mud flood inundation.
- timespan
- Antiquity and Early Modern Period through the 19th-century 'Great Reset' / Mud Flood
- defining boundary
- Submerged ground-floor windows and excavated lower stories of 18th–19th century masonry buildings
- proponents or Body
- 16th–19th century cartographers (Ortelius, Mercator, 1771 Encyclopædia Britannica); Nikolai Levashov; modern architectural researchers
- key evidence
- Maps of Grand Tartary, buried lower stories ('mud flood' strata), star forts, World's Fair Beaux-Arts palaces, atmospheric spire antennas