My father and I climbed Dewey Pk from up Dewey Creek. Beautiful day, awesome views of Rainier. Saw (and heard) a bunch of elk below. Climbed Seymour Pk as well the same day, then did Tahtlum Pk the next day. I would call the last 80' more like class 4 (Beckey calls it class 3). It is all really loose and hard to protect. A rope would have been nice to rappel off the top.