The tallest and most visually striking peak is Mount Aix at 7,766 feet (2,367 m) with a prominence of 3,286 feet (1,002 m). The Cougar Lakes portion is characterized by high ...
Mount Aix, 7,766 feet (2,367 m) Tieton Peak, 7,724 feet (2,354 m) Cascade Mountains; Rattlesnake Hills; Horse Heaven Hills [edit] Major rivers. Yakima River