5. Lake O’Higgins-San Martín, Chile & Argentina – 836 meters (2,742 ft) deep. Located in Patagonia, It has a surface area of 1,013 km and a shoreline length of 525 km. Viewed from above, the lake consists of a series of finger-shaped flooded valleys, of which 554 km are in Chile and 459 km in Argentina,

10 Deepest Lakes In The World:  Lake O'Higgins-San Martín

10 Deepest Lakes In The World: Lake O’Higgins-San Martín