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Mount Rainier National Park
Mountaineering Guide Services

Climbing instruction, multi-day summit climbs, multi-day climbing seminars, and private climbs are available through:

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Artist rendering of the Osceola Mudflow releasing from Mount Rainier.

Did You Know?
About 5,600 years ago the summit and northeast face of Mount Rainier fell away in a massive landslide accompanied by volcanic explosions. The Osceola Mudflow, a towering wall of mud and rock, thundered down the White River Valley where it deposited 600' of debris eventually reaching the Puget Sound.

Last Updated: March 28, 2007 at 15:16 MST