The Mud Flood

First floors buried worldwide, windows at ankle height. A reset, the theory claims, inside living memory.

The mud-flood evidence set — buried first floors, basement windows, raised streets — is documented urbanism: 19th-century street regrading is on the municipal record in Chicago (the documented 1850s-60s raising of the city on jackscrews), Seattle (the Underground tour operates in the buried storefronts, post-1889 fire regrade), and dozens of cities. The lore reads the same photographs as a global burial event. The node holds the confirmed engineering history that produces every exhibit the theory circulates — the rare case where the debunking is a tourist attraction.