The brains behind the Adaptive Grand Slam, Martin Hewitt, displays nerves of steel crossing a crevasse on Mt. Manaslu. 

Hewitt's team return to Mount Aconcagua in January 2017 as part of their mission to become the first disabled team to climb the highest peak on each continent and to walk unsupported to the north and south poles. 7 peaks, 2 poles. 

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