Big Sky is building up their three terrain parks with more features just in time for spring skiing and riding. Newbie park rats should hit Explorer Park below the halfpipe; its smaller features are a good place to learn. But Swifty Park is the place to test skill levels. Its right side now has seven 10- to 15-foot jumps; on the left, you can cut a line through seven jibs of varying intensity. Ambush Park now sports 30- to 40-foot double lines that lead to a tall rainbow box and two down rails. Groomer crews also are cutting a second line of jumps to the left of the Superpipe with a recently installed down-flat-down rail below.