Lower Wenatchee Mountains

A mountainous sub-region within the Central Washington Cascades, bounded by Peshastin Creek (US-97), lower Wenatchee River (US-2), Columbia River, Colockum Creek, Kittitas Valley, Swauk Creek (US-97), and Blewett Pass.  Notable landforms include Horse Lake Mountain, Tronsen Ridge, Mission Ridge, Mt. Lillian, and Jumpoff Ridge.