formed by Kuropak Creek, 11 mi. SE of Point Thompson, Arctic Slope
Eskimo name meaning "big gorge"; so called because the ravine's walls are fairly steep with few breaks in them. Name reported in 1966 by E. S. Burch.
Flag Hill, Guard Hill, Igilerak Hill, Iluituk Hill, Kisimilok Mountain, Mad Hill, Stoney Ridge, Talaverat Hill, Telavirak Hills,
Lakes:Atosik Lagoon, Ikaknak Pond, Mapsorak Lagoon, Pumaknak Pond,
Mountains:Ridges:Saligvik Ridge, Sigrikpak Ridge,
Rivers:Streams:Angmakrok Creek, Aniyuyaktuvik Creek, Bird Creek, Conglomerate Creek, Gulo Creek, Ilikrak Creek, Inuktak Creek, Kiktoya Creek, Kiliguak Creek, Kisimilok Creek, Kuropak Creek, Mitik Creek, Niyiklik Creek, Ogotoruk Creek, Phosphorite Creek, Pond Creek, Saligvik Creek, Snowbank Creek, Tobit Creek, Trail Creek, Tumi Creek, Ugalak Creek, Wolf Creek,
Valleys:Kugukpak Valley, Ogotoruk Seavalley, Ogotoruk Valley, Saligvik Valley,
Cities: