Riddle Peaks is an 8,212-foot summit in Washington’s North Cascades at the head of Riddle Creek, near Lake Chelan and Holden, within the Wenatchee National Forest and on the edge of the Glacier Peak Wilderness. Its steep southern face rises about 5,000 feet above the Railroad Creek valley in only two miles, giving it striking local relief in rugged terrain. Water from the mountain drains toward Lake Chelan through nearby creeks. First climbed on September 11, 1940, by Everett and Ida Zacher Darr, Joe Leuthold, and Eldon Metzger, it stands in a landscape formed by uplift, faulting, and repeated glaciation, with a cold, snowy mountain climate.