extends NW-SE between Slow Fork Kuskokwim and Tonzona Rivers, 40 mi. E of Medfra, Kuskokwim Low.
Local name reported in 1954 by U.S. Geological Survey (USGS).
Hwnnaya Chak-,
Grayling Lake,
Grayling Hill,
Birch Hills,
Slow Fork Hills,
Pingston Creek,