Complex sentence: On the morning of 10 January 2009 a mountain rescue team found the bodies of Gauntlett and a companion, James Atkinson, who had been killed, when they accidentally fell whilst ice climbing at Chamonix in the Alps.
Split into simpler sentences: On the morning of 10 January 2009, a mountain rescue team found the bodies of Gauntlett and his climbing companion, James Atkinson. Both had been killed after accidentally falling whilst ice climbing at Chamonix in the Alps.