MARIPOSA — Featuring artifacts from iconic first climbing ascents in Yosemite Valley, the Mariposa Museum and History Center and Yosemite Climbing Association, present A History of Rock Climbing in Yosemite Valley. The grand opening of the exhibition is on Friday, Apr. 5 at 6 p.m. followed by a phenomenal slide show presentation. Ken Boche will talk about the first ascent ...

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