natgeo Ascending through the ice fall to Camp 1 at sunrise. The ice fall is constantly changing, and is altered drastically over the course of the season. Each year, the "Ice Fall Doctors" set and maintain a route through the giant frozen maze using fixed lines to aid in the steepest sections and ladders to bridge across the deep crevasses. Its dangerous and important work that ensures relatively safe passage for climbers to the higher camps. @emilyaharrington photo #OnEverest @thenorthface 4y

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