extends N of Black River, at S end of Kuzilvak Mts., 31 mi. E of Scammon Bay, Yukon-Kuskokwim Delta.
Eskimo name meaning "slate" or "slate knife (Ulo)," reported by G. R. Putnam, U.S. Coast and Geodetic Survey (USC&GS), in 1899.
Nunavakanuk Lake,
Ulokat Hills,
Kusilvak Mountains,
Utukakarvik,