On January 11, 1947, Lift 1 on Aspen Mountain officially opened and was named the world's longest chairlift. For 2006-2007, join us in celebrating 60 years of skiing in Aspen! Rising out of the heart of downtown Aspen and famous for its steeps, bumps and incredible views, Aspen Mountain (also known as Ajax) is exhilarating for skiers and snowboarders alike. Season dates: November 23, 2006