Episode 1 of 3
Local Geological Evidence
- When
- 1700
- Where
- Oregon and Washington coast
- Part of
- 1700 Cascadia Earthquake
Dendrochronology and archaeological findings in the Pacific Northwest confirm the earthquake's impact, including coastal subsidence and village flooding.
Ghost forests of red cedars in Oregon and Washington show outermost growth rings from 1699, indicating they were killed by coastal lowering. Archaeological research reveals several coastal villages were flooded and abandoned around 1700.
Sources
- 1700 Cascadia earthquake Wikipedia, revision of 2026-08-31
Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.