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Watch Jeff Mercier Onsight Powerdab D13 in U.K.

Jeff Mercier is an all-round top climber and search and rescue technician in Chamonix. In this short film, Mercier onsights Powerdab D13 at the Works Cave in the Lake District of the U.K. The route was first climbed by Greg Boswell in 2013.

After his first ascent, Boswell said, “I called the route Powerdab due to the nature of the ground fall potential climbing and graded it D13.” Mercier spent an hour on the route for the onsight. Wondering what D13 is? It’s M13 without the ice.