Mammoth Mountain Ski Area is a large ski resort in the western United States, located in eastern California along the east side of the Sierra Nevada mountain range in the Inyo National Forest. Mammoth has more than of ski-able terrain, serviced by 28 lifts. The area has of vertical, rising to an elevation of , and enjoys a long ski season. The resort was founded in 1953 by Dave McCoy and, from 2005 to 2017, was owned by the Starwood Capital Group. In 2017, Mammoth Resorts announced its sale by Starwood to a partnership of Aspen Skiing Company and KSL Capital Partners, later named Alterra Mountain Company. Description The ski area is located on the north side of Mammoth Mountain in the volcanic Long Valley Caldera. Overnight guests stay in the town of Mammoth Lakes, California and occasionally in neighboring towns such as Bishop and June Lake. June Lake's ski area is also owned by Mammoth Mountain Ski Area. The top of the mountain has challenging chutes and groomed as well as mogul runs. There are eight Unbound terrain parks. Unbound Main, adjacent to Main Lodge, is highly praised by extreme snowboarding and skiing enthusiasts, and is one of the major attractions of the ski resort. Mammoth Mountain also has one of the longest ski seasons in North America, which averages from the start of November to Memorial Day. The resort occasionally enjoys a longer season, as in 2016/2017, when it opened on November the 8th and did not close until the August the 6th. The 1994–95 season was Mammoth Mountain's longest, over ten months, with the resort operating from October 8 until August 13. The 2016–2017 season was the second snowiest on record, with 618 inches (2010-2011 with 668.5 inches is the resort record), and it stayed open until August 6, 2017. January 2017 was the snowiest month in Mammoth history, with 246 inches. Mammoth receives an average of of snow per season, though during the 2010–11 season the resort recorded a record accumulation of . As recently as the 1980s, senior citizens could ski on Mammoth for free. , those aged at least 80 years may ski for free. Terrain aspects North: 65% West: 10% East: 22% South: 3% Logistics Mammoth Mountain is located in California's Eastern Sierra approximately south of the Nevada state line and 50 minutes from the Eastern Gate of Yosemite National Park. While the