In Idaho, BLM manages nearly 36,000 acres of public lands in the China Cup Butte Wilderness Study Area. This geologically important area features an almost perfectly circular cone 1,260 feet in diameter with a 100-foot deep crater located about nine miles southwest of Big Southern Butte in the south-central Snake River Plain.

China Cup Butte is small volcanic cone that is about nine miles southwest of Big Southern Butte in the south-central Snake River Plain.