Which mountain is situated in Alaska and known for the West Buttress route?

Mount Denali, formerly known as Mount McKinley, is the highest peak in North America and is located in Alaska. The West Buttress route is a prominent climbing route on Denali, favored by many mountaineers for its relative accessibility and challenging conditions. This route is significant in the mountaineering community because it provides access to the summit through a series of technical and physical challenges, including crevasses and rapidly changing weather, which can test the skills and endurance of climbers. Denali's prominence and the challenging nature of the West Buttress route contribute to its reputation as a desirable ascent for serious climbers.

In contrast, other mountains listed do not have a notable affiliation with the West Buttress route. Mount St. Helens is located in Washington and is known for its volcanic activity, particularly the eruption in 1980. Mount Rainier, also in Washington, is famous for its glaciated summit but is not associated with the West Buttress route. Pikes Peak is in Colorado and is recognized for its accessibility via a highway and a cog railway, rather than any specific climbing route like the West Buttress.