In the Wakhan Corridor of Afghanistan 28 of 30 glaciers examined retreated significantly between 1976 and 2003, with an average retreat of per year. One of these glaciers, the Zemestan Glacier, retreated during this period, not quite 10% of its length. In examining 612 glaciers in China between 1950 and 1970, 53% of the glaciers studied were retreating. After 1990, 95% of these glaciers were measured to be retreating, indicating that retreat of these glaciers was becoming more widespread. Glaciers in the Mount Everest region of the Himalayas are all in a state of retreat. The Rongbuk Glacier, draining the north side of Mount Everest into Tibet, has been retreating per year. In the Khumbu region of Nepal along the front of the main Himalaya of 15 glaciers examined from 1976 to 2007 all retreated significantly and the average retreat was per year. The most famous of these, the Khumbu Glacier, retreated at a rate of per year from 1976 to 2007. In India, the Gangotri Glacier retreated between the years 1936 and 1996 with of that retreat occurring in the last 25 years of the 20th century. However, the glacier is still over long. In Sikkim, 26 glaciers examined between the years 1976 and 2005 were retreating at an average rate of per year.