[3] It flows northward from the Bitzshtini Mountains into the Tanana west (downstream) of Manley Hot Springs.

[4] In 1899, Lieutenant J. S. Herron attributed the name to the Tanana peoples living in the area.

[1] However, a century later linguist William Bright, citing the Koyukon Athabascan Dictionary, attributed the name to the Koyukon words kk' os, schist rock, combined with no', river.

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