Cloudcroft PeaksCloudcroft Peaks is located in the Lewis Range, Glacier National Park in the U.S. state of Montana.ClimateCloudcroft Peaks is located in an alpine subarctic climate zone characterized by long, usually very cold winters, and short, cool to mild summers. Winter temperatures can drop below −10 °F with wind chill factors below −30 °F.GeologyLike the other mountains in Glacier National Park, Cloudcroft Peaks is composed of sedimentary rock laid down during the Precambrian to Jurassic periods. Formed in shallow seas, this sedimentary rock was initially uplifted beginning 170 million years ago when the Lewis Overthrust fault pushed an enormous slab of precambrian rocks thick, wide and long over younger rock of the cretaceous period.