This weekend, Buttermilk Mountain and Highlands will open. With the opening of these two mountains, the Power of Four will be completed. Starting this Saturday, you will be able to ski any of the four mountains by purchasing just one lift ticket. Due to great early season snow, Snowmass and Aspen will continue to open untracked terrain while Highlands will have a mountain full of fresh powder to share with the public. Buttermilk will open its famous terrain park for those who wish to practice their skills on the half pipe and rails.