cross section of the river valleys are a result of recent glaciation. Uplift and faulting in combination with glaciation have been the dominant processes which have created the tall peaks and deep valleys of the North Cascades area. See also Geography of the North Cascades Geology of the Pacific Northwest Gallery References External links Weather: Vasiliki Ridge North Cascades Landforms of Okanogan County, Washington Ridges of Washington (state) Cascade Range