The exit ice is quite aesthetic, but borders on WI 2 vs WI 3 with a bunch of run out snow climbing towards the top. In January, 2008, there was a huge hole down to the running creek between where the belayer stands and the leader takes off. You would want to protect this climb early so as not to slide into this gapping hole. The plastered ice foam on the adjacent rock walls makes for quite the scene. It is hard to make much of a station at the top of the canyon. A little rock gear might make less experienced parties somewhat more comfortable. Once the 2nd is brought out, there is a steep snow slope that needs to be ascended to the top of the western canyon wall. Crossing the snow ledge to the east side from the belay spot would not be recommended even though tempting. It is basically a bunch of tree logs and brush filled in with snow.
Marble Canyon, Kootenay National Park, BC, Canadian Rockies Ice, January, 2008