Paralleling the coast of the Chukshi Sea, 18 mi SE of Cape Thompson, Arctic Slope.
HistoryNamed for Mapsorak Hill in 1960 by Project Chariot personnel.
Kisimilok Mountain, Mapsorak Hill, Mapsorak Mountain, Saklolik Mountain, Talaverat Hill,
Lakes:Atosik Lagoon, Mapsorak Lagoon, Pusigrak Lagoon, Seppings Lagoon, Singoalik Lagoon,
Mountain Passes:Ridges:Sigrikpak Ridge, Tinguk Ridge,
Rivers:Streams:Battery Creek, Inuktak Creek, Kiktoya Creek, Kisimilok Creek, Mapsorak Creek, Wolf Creek,
Valleys: