Observation Rock is an apt name for this remnant vent on the north side of Rainier, about 4 miles NNW of Rainier's summit crater. Understandably, Ob Rock's summit provides unmatched views of the north faces and glaciers of Rainier. Even with its friable nature, Ob Rock is a popular objective. This route is a beginner ice climb on a north-facing ice sheet. The peak can be climbed in a day from the Mowich Lake trailhead. Some crevasses exist but these are mostly avoidable.
|Driving Distance from Portland||200 miles|
|Driving Time from Portland||4 hours|
|Expected Duration||Car to car in one day|
|Relevant Books||Scrambles in Washington by Peggy Goldman Cascade Alpine Guide: Columbia River to Stevens Pass by Fred Beckey|
|Relevant Maps||USGS Mowich Lake, Green Trails Mt. Rainier West 269|