Laguna Verde (Green Lagoon) is a greenish-blue colored lake that sits at an altitude of 4,400 m (14,435 ft) above sea level. It is located in the southwest part of the altiplano region of Bolivia, in the Eduardo Avaroa National Andean Wildlife Preserve, on the Chilean border at the foot of the Volcano Licancabur.
Its water color is caused by sediments, containing lead, sulfur, arsenic, cooper and calcium carbonates. The water temperature must drop well below freezing before ice can form and has been seen still liquid at -20° Celsius (-4°F).
Licancabur is a highly symmetrical stratovolcano and dominates the landscape of the Salar de Atacama area.
Laguna Verde, Eduardo Avaroa National Andean Wildlife Preserve, Bolivia