Complex sentence: Back at Ben Nevis, the presenter has "unfinished business": in rain and bad visibility, Rhys Jones is guided up a scrambling ascent of the ledge route, ending on the summit plateau.
Split into simpler sentences: Back at Ben Nevis, the presenter has "unfinished business". In rain and bad visibility, Rhys Jones is guided up a scrambling ascent of the ledge route, ending on the summit plateau.