Usoi Dam
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The Usoi Dam is a natural landslide dam along the Murghab River in Tajikistan. At 567 metres (1,860 ft) high, it is the tallest dam in the world, either natural or man-made. The dam was created on February 18, 1911, when the 7.4-Ms Sarez earthquake caused a massive landslide that blocked the flow of the river.
Usoi Dam viewed from behind. Sarez Lake is on the right, and the smaller body of water to the left is Shadau Lake. The earthen barrier separating the two lakes is not part of the dam, which is further behind in the background.
Bartang
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The Bartang is a river of Central Asia, and is a tributary to the Panj which itself is a tributary to the Amu Darya. In its upper reaches, it is also known as the Murghab and Aksu; it flows through the Wakhan in Afghanistan, then through the Rushon District of the Gorno-Badakhshan autonomous region, Tajikistan. The river is 528 kilometres (328 mi) long and has a basin area of 24,700 square kilometres (9,500 sq mi).
The Bartang from space