group, extends n-s 2.5 mi. SW of junction of Nizina River and Young Creek and 8 mi. SE of McCarthy, Copper River Basin.
Local name; published in 1959 by U.S. Geological Survey (USGS).
Baultoff Lakes, Threemile Lake,
Locales:Mine:Bonanza Mine, Green Butte Mine, Jumbo Mine, Mother Lode Mine, Nikolai Mine,
Mountains:Bonanza Peak, Green Butte, Porphyry Mountain, Sourdough Peak,
Parks:Kennecott Mines National Historic Landmark,
Mountain Passes:Ridges:Bonanza Ridge, MacColl Ridge, Sourdough Hill,
Rivers:Streams:Amazon Creek, Bonanza Creek, Chititu Creek, Dan Creek, Dimond Creek, East Fork McCarthy Creek, Farm Creek, Jumbo Creek, Lake Creek, Lubbe Creek, May Creek, McCarthy Creek, National Creek, Nikolai Creek, Rex Creek, Swift Creek, White Creek, Young Creek,
Routes:Bonanza Mine Road, Bonanza-Jumbo Mine Road, Erie Mine Trail, Jumbo Mine Trail, Root Glacier Trail,
Valleys:Amazon Gulch, Blygh Gulch, Boulder Gulch, Boulder Gulch, Crumb Gulch, Devils Gulch, Fivemile Gulch, Kaufman Gulch, Kermon Gulch, Pack Gulch, Sawmill Gulch, Sunday Gulch, Tana Canyon,
Cities: