Anonymous ID: 29a3e2 Sept. 23, 2026, 3:14 p.m. No.25069758   🗄️.is 🔗kun

>>25069726

"all at once"

no.

https://en.wikipedia.org/wiki/Dry_Falls

 

Dry Falls

 

"

early twenty thousand years ago, as glaciers moved south through North America, an ice sheet dammed the Clark Fork River near Sandpoint, Idaho. Consequently, a significant portion of western Montana flooded, forming the gigantic Lake Missoula. About the same time, Glacial Lake Columbia was formed on the ice-dammed Columbia River behind the Okanogan lobe of the Cordilleran Ice Sheet. Lake Columbia's overflow – the diverted Columbia River – drained first through Moses Coulee and as the ice dam grew, later through the Grand Coulee.

 

Eventually, water in Lake Missoula rose high enough to float the ice dam until it gave way, and a portion of this cataclysmic flood spilled into Glacial Lake Columbia, and then down the Grand Coulee. It is generally accepted that this process of ice-damming of the Clark Fork, refilling of Lake Missoula andsubsequent cataclysmic flooding happened dozens of timesover the years of the last Ice Age.

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