Around 15 km in length, the gorge is located where the river passes between 5,596 metre Jade Dragon Snow Mountain and 5,396 m Haba Xueshan in a series of rapids under steep 2000 metre cliffs. Legend says that in order to escape from a hunter, a tiger jumped across the river at the narrowest point (still 25 metres wide), hence the name. Administratively, the river in this area forms the border between Yulong Naxi Autonomous County of Lijiang City (right bank) and Shangri-La County of Diqing Tibetan Autonomous Prefecture (left bank). Tiger Leaping Gorge is a contender for the world's deepest river canyon, depending on the exact definition used. The inhabitants of the gorge are primarily the indigenous Naxi people, who live in a handful of small hamlets. Their primary subsistence comes from grain production and foreign hikers. The gorge is not considered navigable. In the early 1980s, four rafters attempted to go down the gorge and were never seen again. In 1986, the first known successful attempt to sail through the gorge was made by the first expedition to float down the entire length of the Yangtze, starting at the river's high source at the Gelandandong glacier lake. The area was officially opened to foreign tourists in 1993, but had attracted adventurous backpackers already in the 1980s. Officials plan to improve the existing trails and roads, bringing tour buses and more development. These plans arouse highly varied reactions among the local population, from strong oppo