Around 600 years ago, 360 BILLION tons of rock slid down a mountainside, blocking the Columbia River entirely 😮 It created a massive lake stretching to the coast & buried forests and villages along the banks!
Cascade Rapids formed by 600-year-old landslide blocking Columbia River
Key facts
- Landslide occurred approximately 600 years ago
- 360 billion tons of rock and earth slid down mountainside
- Blocked the Columbia River and created massive lake
- Formed a natural land bridge across the river
- Lake stretched from inland areas to the coast
- Covered forests and villages near Columbia River banks
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