Tags: Mountain Range.
The Chehalem Mountains are a mountain range located in the Willamette Valley in the U.S. state of Oregon. Forming the southern boundary of the Tualatin Valley the Chehalems are the highest mountains in the Willamette Valley. Composed of a single land mass that was uplifted by tectonic forces the mountain range includes several spurs and ridges such as Parrett Mountain Ribbon Ridge and Bald Peak.
