Climber.Org Roster Entry: Mark OBrien

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Email Address:on file - send a message to Mark OBrien
City, State, Zip:Los Angeles, CA

I enjoy all kinds of climbing but prefer alpine and ice. I am always looking for safe, experienced climbers to join me on trips to Tahquitz, Josh, the Sierras, Lee Vining, Yosemite, Ouray, the Cascades, etc.

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