flows NE to Ayiyak River, 7 mi. NW of Castle Mtn. and 44 mi. NW of Anaktuvuk Pass, Arctic Slope. 15 miles long.
Descriptive name given in 1944 by W. W. Patton, U.S. Geological Survey (USGS), during the exploration of Naval Petroleum Reserve No. 4 for nearby Fortress Mountain.
Castle Mountain, Fortress Mountain, Hatbox Mesa, Horseshoe Mountain,
Mountain Passes:Mountain Ranges:Streams:Aucella Creek, Canoe Creek, Castle Creek, Chert Creek, Fortress Creek, Notch Creek, Speedway Creek,