the 1980s, Gondola Two was installed in parallel to the first gondola, and the Challenger double chair served upper-elevation expert terrain on the north edge of the ski area. A tow was later added above this lift. Gondola Two was replaced with a Doppelmayr high speed quad, Swift Current 4, in 1997. The eighth lift at Big Sky was the Southern Comfort on the south side of Andesite Mountain, a Heron-Poma triple chairlift acquired from Copper Mountain in Colorado, installed in 1990 and upgraded to a high speed quad for the 2004-2005 ski season. In the fall of 1995, Big Sky installed the Lone Peak Tram to provide access to expert terrain from the Lone Mountain summit. The Shedhorn double chair was also part of this expansion, installed in 1995 on the lower south face of Lone Mountain. The tram increased Big Sky's vertical drop to . The minimum elevation was lowered further in the fall of 1999, with the addition of a used triple chairlift from Keystone Resort in Colorado, starting at a base elevation of at Lone Moose Meadows. This increased the ski area's total vertical drop to , with the maximum continuous vertical drop increased to from the top of the tram to the main base area. In 1990 the Shoshone Condominium Hotel and the Yellowstone Conference Center were built. In April 2000, Boyne Resorts announced that an estimated $400 million in improvements would take place over the next ten years to the Mountain Village and the ski area. Later in 2000, the $54 million Summit Hotel was completed. In late 2007, the $25 million Village Center Complex was opened. In 2007, Big Sky expanded the skiing opportunities on the south face of Lone Peak with the reinstallation of the original Southern Comfort triple chairlift as the Dakota chairlift on the south side of Lone Peak, providing access to the accompanying out-of-bounds sidecountry, Dakota Territory. Gondola One was retired in the summer of 2008, dismantled due to the rising cost of repairs. Big Sky's neighbor on its north boundary, Moonlight Basin, merged with Big Sky Resort in October 2013. In 2016, Big Sky Resort installed two new Doppelmayr chairlifts as part of BigSky2025, a 10-year, $150-million project. The Lone Peak triple chairlift in the bowl was replaced with Powder Seeker, a six-seat high-speed chairlift with heated seats and bubble covers. The same summer, the Challenger double chairlift,