Crystal Peak has been on my "list" for a while and I have been holding off for a successful winter ascent, but on a beautiful day when my friend Dan threw the idea up of doing a loop out of Peak 10, Crystal Peak and Father Dyer Peak I could not resist. With a 12pm start and one hell of a hangover, we ascended the S-SE slopes of Peak 10 and then went on to Crystal Peak. We continued on to Father Dyer then descended to the south saddle and glissaded down to the Crystal Lakes valley. Sweet!!