Cracker Lake sits some 4,000 feet below the sheer north face of Mount Siyeh (10,014 ft.). If I'm not mistaken, only two groups have ever summited Siyeh via this route, which is supposed to require some extremely difficult technical climbing. Both groups spent a night sleeping on the steep rock wall, as the climb took two full days.

While obtaining a backcountry permit from the Many Glacier Ranger Station in August, the ranger remarked that some of his friends were attempting the third successful climb. I never did find out if they made it, but I hope they did!