In the Bendeleben Mountains, 10.0 km (6.2 mi) NNE of the confluence of Telephone Creek and Windy Creek, 19.5 km (12.1 mi) NNW of Omilak Mountain, 64.4 km (40 mi) NE of White Mountain and Council.
Named for Rev Ludvig E. Ost (1885-1989), an educator, businessman, miner, US Marshall and member to the 18th Territorial House of Representatives from 1947-1949.
Betula Creek, Knowles Creek, Mosquito Creek, North Fork Mosquito Creek, Olivine Creek, Omilak Creek, South Fork Mosquito Creek, Telephone Creek, Windy Creek,