Fagnano Lake

Fagnano Lake, also called Lake Cami, is a lake located on the main island of the Tierra del Fuego archipelago, and shared by Argentina and Chile. The 645 km2 lake runs east–west for about 98 kilometres, of which 72.5 km belong to the Argentine Tierra del Fuego Province, and only 13.5 km belong to the Chilean Magallanes y la Antártica Chilena Region. It has a maximum depth of 449 meters.

Source: Wikipedia