My friend Dave and I hiked this in 1989. We worked at Lake Yellowstone. hiked 5 miles after work up Blackwater creek. Then next day went to top of Fortress and camped on Sheep Mesa. Hiked out next day to get back to work. Musicman82 thanks for the photos! We did not take any back then and it brings back good memories.
Climbed with Tim (musicman82). Really awesome area once you get up high. The approach is kind of long and wooded but the views from the summit were worth every step!
Climbed with Chris (SP member Morlow) on a two-day backpack; lots of snow on the trail up high - wonderful views!