 After two preparatory trips through the Khumbu Icefall to the Western Cwm, he left his team on 7 May to attempt the summit solo and without supplemental oxygen, carrying a pack with a tent, food, fuel and a movie camera to the South Col at 8000m.Light-headed and plagued by bouts of diarrhoea following the challenging solo climb up the Lhotse Face, Macartney-Snape rested a day before setting out for the summit of Everest at 9.30pm on 10 May in bright moonlight.Climbing solo, weak with nausea and diarrhea and having eaten little in the previous days, it took nearly six hours in cold for him to ascend from 8,230 m and 8,536 m, nearly falling to his death at midnight when stopping to adjust the movie camera he carried.