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The Younger Dryas. A twelve-hundred-year cold snap interrupts the warming and clears the board.
In plain words
Around 12,900 years ago a warming world plunged back into twelve centuries of cold: the Younger Dryas, measured in ice and sediment. By the author's ruling the flood stands here. An impact as its cause is contested, and the date does not rest on it.
The mechanism
BOARD CLEARED — the single largest reset in the human span, and the record on the far side of it opens with a populated world nobody explains
How it was checked
- EvidenceT6 PHYSICAL / MANUSCRIPT; Status: COMMITTED; a capture
- Letter eraTHE DECLARATION AND THE DEEP RECORD the fall to Babel, undated by the text and undated here
- Plate — GISP2 Greenland ice core segment · Public domain · source: https://commons.wikimedia.org/wiki/File:GISP2D1837.jpg
- SourcesARCHAEOLOGY / PALAEOCLIMATE — consensus
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