Thousands of prayer flags hang at an overlook above the Yarlung Tsangpo River. This river is the world's highest at an elevation of 9,500 to 14,800 feet above sea level and the longest river in Tibet at over 1,760 miles. It originates from the Angsi Glacier in the middle Himalayas and is the upper part of Brahmaputra River. The Yarlung Tsangpo flows West to East across the South of Qinghai-Tibet Plateau, through India and Bangladesh.