Wallatani Lake
Wallatani is a lake in the Bolivian Andes situated in the southern section of the Cordillera Kimsa Cruz. It is situated 4,939 m high at the foot of the mountains Wallatani and San Luis, near Jach'a Khunu Qullu and Wayna Khunu Qullu in the La Paz Department, Inquisivi Province, Quime Municipality.
It is the highest body of water on which anyone has ever sailed, after Peter Williams, Brian Barrett, Gordon Siddeley and Keith Robinson did so on November 19, 1977.