Like Eric says, superior place to snowshoe...too bad I didn't bring them. Did a posthole hike to Rudy's Flat. Didn't see a single person. The route also looks like it's a good cross country ski; someone did up to the top.
I also like snowshoeing in North Canyon during winter. It can be done as a loop hike with the trail coming in from Mueller Park.
Great canyon for a snow shoe. Look forward to hiking it in the summer.