Lake"); the ethnonym Chud ???? referred to various Finnic peoples in what is now Estonia, Karelia, and northwestern Russia.

Formation

The lake is a remnant of a larger body of water that existed in this area during a former ice age. In the Paleozoic Era, 300 to 400 million years ago, the entire territory of the modern Gulf of Finland was covered by a sea. Its modern relief was formed as a result of glacier

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