Pangong Tso,  Tibetan for “long, narrow, enchanted lake”, also referred to as Pangong Lake, is an endorheic lake in the Himalayas situated at a height of about 4,350 m (14,270 ft). It is 134 km (83 mi) long and extends from India to Tibet. Approximately 60% of the length of the lake lies in Tibet. The lake is 5 km (3.1 mi) wide at its broadest point. All together it covers 604 km2. During winter the lake freezes completely, despite being saline water. It is not part of Indus river basin area and geographically a separate land locked river basin.[1]

The lake is in the process of being identified under the Ramsar Convention as a wetland of international importance. This will be the first trans-boundary wetland in South Asia under the convention.

Flora, fauna and geography
The brackish water[9] of the lake has very low micro-vegetation. Guides report that there are no fish or other aquatic life in the lake, except for some small crustaceans. On the other hand, visitors see numerous ducks and gulls over and on the lake surface. There are some species of scrub and perennial herbs that grow in the marshes around the lake.
The lake acts as an important breeding ground for a variety of birds including a number of migratory birds. During summer, the Bar-headed goose and Brahmini ducks are commonly seen here. The region around the lake supports a number of species of wildlife including the kiang and the Marmot.
Formerly, Pangong Tso had an outlet to Shyok River, a tributary of Indus River, but it was closed off due to natural damming. Two streams feed the lake from the Indian side, forming marshes and wetlands at the edges.[10] Strand lines above current lake level reveal a 5 m (16 ft) thick layer of mud and laminated sand, suggesting the lake has shrunken recently in geological scale.[9]

Access
Pangong Tso can be reached in a five-hour drive from Leh, most of it on a rough and dramatic mountain road. The road crosses the villages of Shey and Gya and traverses the Changla pass, where army sentries and a small teahouse greet visitors. Road down from Changla Pass leads through Tangste and other smaller villages, crossing river called Pagal Naala or “The Crazy Stream”. The spectacular lakeside is open during the tourist season, from May to September.
An Inner Line Permit is required to visit the lake as it lies on the Sino-Indian Line of Actual Control. While Indian nationals can obtain individual permits, others must have group permits (with a minimum of three persons) accompanied by an accredited guide; the tourist office in Leh issues the permits for a small fee. For security reasons, India does not permit boating.