A list like this is bound to stir controversy among mountaineers. A climb on a given mountain may be significant because it’s a “first,” but it may not be as physically challenging as a second or third ascent of the same mountain by other routes, or in other seasons, or when it is accomplished alone, or without the use of bottled oxygen. But here are 10 strong contenders, and a few sure bets, for anybody’s “greatest” list:—M.I. Read more »