Sleeping Beauty Peak is a 4,907-foot mountain in southern Washington's Cascade Range, in Gifford Pinchot National Forest southwest of Mount Adams. Named for the sleeping-woman shape its ridge presents from the east side of Trout Lake Valley, it rises in a wet west-Cascades setting where Pacific weather brings heavy rain and winter snow, with clearer summers making July through September best for views or climbing. The peak was formed when andesitic magma pushed into older volcanic rocks more than 25 million years ago. Its runoff feeds tributaries of the White Salmon River, and old-growth forest surrounds the rocky outcrop reached by a steep 1.4-mile trail. A fire lookout tower built in 1931 once stood near the summit.