Mount Pershing is a 6,154-foot peak in the Olympic Mountains of western Washington, within the Mount Skokomish Wilderness of Olympic National Forest. Rising above the Hamma Hamma drainage in Mason County, it sheds runoff into the Hamma Hamma River and stands near higher Mount Washington. It was named for General of the Armies John J. Pershing, who lived from 1860 to 1948. The mountain reflects the Olympics’ geologic story, with Eocene sandstone, turbidite, and basaltic oceanic crust uplifted and later carved by Pleistocene glaciation. In the region’s marine west coast climate, Pacific moisture brings heavy winter rain and snow, while summer usually offers the clearest conditions.