Goat Island Mountain is a 7,288-foot ridge-like peak in Mount Rainier National Park, part of Washington’s Cascade Range. Lying east-northeast of Mount Rainier’s summit, it is especially prominent from the Sunrise Historic District and nearby trails, and its summit has views toward Cowlitz Chimneys, Fryingpan Glacier, and Mount Rainier. The mountain is approached from the Wonderland Trail, with Burroughs Mountain as its nearest higher neighbor and runoff draining into the White River. Its descriptive name comes from mountain goats often seen there, and the United States Board on Geographic Names officially adopted the name in 1932. The area’s marine west coast climate brings heavy winter precipitation, with the clearest weather usually from July through September.