Lake Titicaca is a lake located on the border of Peru and Bolivia. It sits 3,811 m (12,500 ft) above sea level, making it the highest commercially navigable lake in the world. By volume of water, it is also the largest lake in South America (Lake Maracaibo has a larger surface area, but it is often disregarded as it is directly connected to the sea). 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.