Sluiskin Mountain is a prominent two-summit mountain in Mount Rainier National Park, northwest of Burroughs Mountain in Washington’s Cascade Range. Its higher rocky summit, The Chief, rises to 7,026 feet, while the western summit, The Squaw, reaches 6,960 feet or slightly more, with pinnacles called The Papooses farther west. The mountain was named for Sluiskin, the Native American guide who helped Hazard Stevens and P. B. Van Trump make the first successful ascent of Mount Rainier in 1870. Sluiskin Falls also honors him, tying the mountain to a well-known chapter in Rainier climbing history. Pacific weather patterns bring heavy precipitation here, and its runoff feeds tributaries of the White River.