Titicaca is a lake at the Peruvian/Bolivian border and is the largest lake in South America by volume. It is also one of the highest located lakes in the world, with an average water surface at 3,812 m above mean sea level. The water levels have been gradually declining since 2000 as a result of less precipitation and the melting of glaciers that feed the lake’s tributaries. The lake’s climate is alpine, with cool to cold temperatures throughout the year and an average precipitation of ~610 mm. The image shows the lake in its full extension, surrounded by the Ulla Ulla Fauna Reserve in the north and the Reserva Aymara Lupaca in the south.