In Idaho, BLM manages over 11,000 acres of public lands in Petticoat Peak Wilderness Study Area. The topography around Petticoat Peak (8,000 feet) within the Fish Creek Mountain Range is steep and mountainous. Canyons and ridges radiate in all directions from the mountain peak. Dominant vegetation on the western slopes include juniper, mountain shrubs and sagebrush.

Lies within Fish Creek Mountain Range just one mile northeast of Lava Hot Springs Idaho in Bannock and Caribou Counties.