Mount Jefferson is a 10,495 feet (3,199 meters) high stratovolcano. It is the second highest in the Oregon Cascade Range, falling second only to Mount Hood by a mere 800 feet. Mount Jefferson last erupted about 15,000 years ago and has shown it has the potential for “large explosive eruptions.” It is home to the Russel, Jefferson Park, Whitewater and Waldo Glaciers.
Good viewpoints can be found along Highway 20 as you travel east around Detrot Lake and from Bend to Sisters, OR looking west from the east side of the Cascade Range. If you want to take a hike, try Pamelia Lake and then on up to the top of Grizzly Peak for spectacular views.
Further south of Mount Jefferson you will find Mt. Washington.
You must obtain a wilderness permit to enter the protected Mount Jefferson Wilderness. You can obtain these permits at the Detroit Lake Ranger Station on Highway 20.
Detroit Ranger Station
US Forest Service
44125 North Santiam Highway SE
Detroit, OR 97342
E-mail: Detroit Ranger District
(503) 854-3366 (voice) (503) 854-3369 (TTY)