North Col
They realised that they would have to return to the Kharta valley and to achieve this they climbed the Kartse on 7 August so they could examine the North Col as well as the Kangshung Face. They wondered if the glacier in the valley to the north was the one that came down from the North Col or whether that glacier was further north again. Everest's northeast ridge they judged very difficult. The North Col and the north ridge above it were the only possibility left. They descended Kartse to Kama and returned to the Kharta valley.