Mt. Doonerak, First Winter Ascent, Previously Unreported. On March 17, 1996, Jon Miller and I flew into the North Fork of the Koyukuk River and skied up Bombardment Creek, climbing a few frozen waterfalls (up to W13) on the approach to Marshall Lake. From a camp at the lake, we climbed directly up a couloir/corner system in a series of running belays and a couple of belayed pitches over snow and thinly ice-covered rock. The climb was quite a bit more interesting than the usual summer route. It was made during a cold snap, with talk of -50°F at nearby Betties.