The knife edge ridge was at our last camp at 10,300 feet. It was a spectacular view with much of the ridge like this for the next day, had we been able to continue. Between that ridge and our tent I fell into a large crevasse 20 feet from camp, catching myself on the lip with my upper body.
It was sobering reminder to never let your guard down even on a ridge where your would think is free of crevasses. Though not frequent, crevasses can form on some mountain ridges due to the vast amount of snow in the Alaskan range.