Reng Zong gathers water from a local well, situated on the Rongbuk River bed. Greenpeace learn from local people that until recent times the river was abundant with water. Now it is dry for most of the year. The Rongbuk Glaciers are one of the prime sources of water feeding into the major rivers of China and India. Glaciers in the Himalaya are receding faster than in any other part of the world as a result of global warming.