thumb|280px|[[Inspiration Peak (Washington)|Inspiration Peak left, Mount Degenhardt centered, and Mount Terror on right, seen from north]]
Mount Terror is a mountain of the Cascade Range, located in the northwestern corner of Washington in Whatcom County. The peak is in North Cascades National Park, about south of the Canada–United States border.
Nearby mountains
- Mount Triumph
- Mount Despair
- Mount Degenhardt
- Mount Shuksan
- Mount Blum
- Mount Prophet
Mount Terror is the highest peak of the southern Picket Range. The Pickets, north and south, are considered the most Alpine region of the Cascades. Mount Terror was first climbed in 1932 by William Degenhardt and Herbert Strandberg of the Seattle Mountaineers. Thirty years later Ed Cooper led the first ascent of the more challenging north face.
Climate
Mount Terror is located in the marine west coast climate zone of western North America. Most weather fronts originate in the Pacific Ocean, and travel northeast toward the Cascade Mountains. As fronts approach the North Cascades, they are forced upward by the peaks of the Cascade Range (Orographic lift), causing them to drop their moisture in the form of rain or snowfall onto the Cascades. As a result, the west side of the North Cascades experiences high precipitation, especially during the winter months in the form of snowfall. With the North American Plate overriding the Pacific Plate, episodes of volcanic igneous activity persisted.