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.

Activity Notes

From Mowich Lake trailhead hike into Spray Park via Knapsack Ridge and camp just south of the Wonderland Trail on Saturday. Sunday - early start to climb Observation rock's north face that should have exposed ice of ~ 4 pitches on moderate terrain (starting out in mid 30 degree ending in 50 degree ice). Return to car Sunday afternoon and return to Portland. <br> <br> Applicants should have experience on steeper snow at a minimum, experience on multi-pitch is desirable.

Other Information
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