by two double chairlifts, Shadow Mountain (commonly referred to as 1A) and Ruthie's. Access to the mountain was radically changed in 1986 with the installation of the Silver Queen Gondola, which ascends to the summit up the east side of the area with a vertical rise of . The area's lifts include 1 high-speed quad, one high-speed triple, two quads, and three doubles. The gondola is one of two lifts, along with the Little Nell chairlift, which ascends from Gondola Plaza in the heart of downtown Aspen. The configuration allows visitors to ascend the mountain from the town center and ski down the Little Nell Run back into town. The mountainside contains hidden and open remains of the intense silver mining activity from the Colorado Silver Boom in the late 1880s and early 1890s. In January 2001, it was decided to end Aspen Mountain's long-time ban on snowboarding. However, as a courtesy to season-pass holders, the resort was not officially opened to snowboarders until April 1, 2001. The longest run is , and the lift capacity is 10,755 riders per hour. The average annual snowfall is , and it has snowmaking capabilities of , approximately one-third of the area. The mountain is considered moderate to difficult, with no "green" (beginner) runs. Its sister mountain, Aspen Highlands, also has no beginner terrain as of December 2017. Novice skiers must go to Snowmass or Buttermilk. Approximately 26% of the terrain is considered expert. The season on the mountain ranges from late November to early April. It is typically the last area, along with nearby Snowmass, in the resort complex to close for the winter. The ski area has a unique "homespun" culture that dates from its early foundation as part of the Utopian social experiment in Aspen created by Walter Paepcke in the 1940s, retaining somewhat of a throwback culture in comparison to the other three areas of the complex. The culture is reflected in the numerous homemade memorials and tributes that dot the trees of mountains created in honor of famous personages such as John Denver and Hunter S. Thompson. It is rumored that under the Bell Mountain lift on Aspen Mountain was the home of the first Panty tree of bras, panties, thongs, and Mardi Gras necklaces as early as the late 1950s. Gorsuch Haus and Lift Lodge One A small lodging, shopping, and residential development is under development near