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Here are more examples.

https://www.onlyinyourstate.com/new-york/sunken-town-ny/

The state of New York has several towns submerged under artificial lakes created to give water to New York City.

Gilboa is the one I've heard about. When they were building the dam there, a quarry (to get rock to face the dam) unearthed a world-famous Lagerstätte of Devonian era fossilized trees.

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

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