There is a cave to the left of the crux pillar that most people use to belay. From there an intimidating traverse to the right takes you onto the pillar. Once on top of this, some people belay from here. Otherwise keep going up steep ice to a tree belay.
Once on top, the fun isn't over - walk climber's right for a few hundred meters (trail here unless you're the first after a snow storm), then do a combination of walking and bum sliding to the base - who-hoo!