extends NW to Middle Fork Koyukuk River, 7 mi. NW of Poss Mtn. and 39 mi. W of Chandalar, Brooks Range.
Local name reported in 1956 by T. E. Taylor, U.S. Geological Survey (USGS).
Jennie Creek Lake, Linda Creek Lake, Minnie Creek Lake, Winers Lake,
Mountains:Grotto Mountain, Midnight Dome, Sukakpak Mountain,
Rivers:Bettles River, Dietrich River, Hammond River,
Streams:Adams Creek, Canyon Creek, Cow Creek, Gold Creek, Grotto Creek, Howard Creek, Japanese Creek, Jennie Creek, Jesse Creek, Kalhabuk Creek, King Creek, Larson Creek, Linda Creek, Minnie Creek, Moose Creek, Nugget Creek, Over Creek, Right Fork Vermont Creek, Sawyer Creek, Sheep Creek, Swift Creek, Vermont Creek, Vi Creek, Wiseman Creek, Wolf Pup,
Valleys:Bluff Gulch, Buckeye Gulch, Confederate Gulch, Coon Gulch, Drinking Cup Gulch, Dry Gulch, Gold Bottom Gulch, Lofty Gulch, Montana Gulch, Rainbow Gulch, Steep Gulch, Sunrise Gulch, Union Gulch, Victor Gulch,