Fusillade Mountain, an 8,755-foot peak in Glacier National Park’s Lewis Range, stands north of Gunsight Lake at the west end of the St. Mary Valley and is visible from the Going-to-the-Sun Road. George Bird Grinnell named it in 1891, using satire to recall W. H. Seward and Henry L. Stimson firing a futile volley at goats on its slope. The mountain is composed of sedimentary rock deposited from the Precambrian to the Jurassic in ancient shallow seas. Its form reflects the Lewis Overthrust, which beginning about 170 million years ago pushed a massive slab of older rock over younger Cretaceous rock. Today it lies in an alpine subarctic climate with severe winter cold.