Lake Titicaca in the Altiplano Basin, Peru and Bolivia15.7S 69.3W
The large, dark blue body of water standing out against the brown altiplano on the Peru-Bolivia border near the center of this image is Lake Titicaca. It sits 3,811 m (12,500 ft) above sea level, making it the highest commercially navigable lake in the world.
The lake is located at the northern end of the endorheic Altiplano basin high in the Andes on the border of Peru and Bolivia. The western part of the lake lies within the Puno Region of Peru, and the eastern side is located in the Bolivian La Paz Department.
It is composed of two nearly separate sub-basins that are connected by the Strait of Tiquina, which is 800 m (2,620 ft) across at the narrowest point. The overall average depth of the lake is 107 m (351 ft).