Northeast Itelmen
Northeast Itelmen was a Chukotko-Kamchatkan language once spoken in Russia.
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Eastern Kamchadal, also known as Eastern Itelmen (or Northern, Northeastern of the same) is an extinct Kamchatkan language of Russia, which was spoken by the Itelmen people who traditionally lived in Kamchatka along the Pacific coast. It belonged to the Itelmen group of the Chukotko-Kamchatkan family (not all researchers recognize that the Itelmen languages belong to the Chukotko-Kamchatkan family). It became extinct by the first third of the 19th century.
From Wikipedia · Eastern Itelmen language · CC BY-SA 4.0