The glacier that comes down in fronf of Choyu, or Cho Oyu, (8,201 metres, 26,906 ft), the sixth highest mountain in the world, located on the Tibet-Nepal border, 20 km west of Mount Everest. “Choyu” comes from the Tibetan name Jowo Yu (jo bo g.yu), “Turquoise Lord”. A few kilometres west of Cho Oyu is Nangpa La (5,716m/18,753 ft), a pass that serves as the main trading route between the Tibetans and the Khumbu’s Sherpas. On the right of the glacier is Chola pass, 5,420 metres (17,782 ft), which trekkers us to go from Gokyo lake and the Choyu glacier to Everest base camp. Helicopter flight, Nepal, 8 April 2015.