Southern Purcell Mountains. From a camp at about 7300 feet on the stream draining southeast from Mount Dorothy into Horsethief Creek, Rich Gnagy and I made the first ascent of the unnamed 10,320-foot peak located one mile north of Mount Dorothy and one mile west of Mount Stockdale, via the east slope and south ridge. The map shows the south summit to be higher, though the north summit is the actual high point. The rock was mainly loose shale and the climb was non-technical. Ice axes were used and some good glissading was enjoyed. A new logging road (inquire locally for directions) now follows up Horsethief Creek at least as far as Farnham Creek, crossing to the south side of Horsethief Creek about 1 mile below.