Keystone's A-51 Terrain Park made top-ten lists in TransWorld Snowboarding, Skiing and Freeskier magazines this season, thanks to visionary park designer Jason George. The park has a dedicated lift — best seats in the house for the thrills and spills unfolding below — and features five different zones for everyone from li'l shredders to resident pros like Jossi Wells and Andreas Wiig. There are three jump lines (Incubator, Park Lane and Main Street) and more than 100 rails, boxes and other features scattered throughout the park. And when the season's over, George and his A-51 park crew are just getting started, catering to film crews and pro riders shooting next season's ski porn.