 The 2011–12 ski season marked the ski resort's 50th anniversary season, with the resort implementing a year-long celebration in honor of a half-century since the resort was founded on December 16, 1961.While no new lifts were built in 2012, the Colorado SuperChair received new chairs, replacing the original chairs that had been used since the lift's original construction.In 2013, Breckenridge carried out a massive expansion with the opening of a long-awaited 543 acre expansion onto Peak 6.