The General Carrera Lake (or Lake Buenos Aires on the Argentine side) is a lake located in Patagonia and shared by Argentina and Chile. It is the biggest lake in Chile and the fourth largest in Argentina.
The lake is of glacial origin and is surrounded by the Andes mountain range. The lake drains to the Pacific Ocean on the west through the Baker River.
The area near the coast of the lake was first inhabited some 100 years ago.
The pictures have been taken on the Chilean side of the lake. For years this side could only be accessed through Argentina. It was only in the 1990s that the construction of the Carretera Austral connected it to the rest of Chile, and permitted the expansion of tourism in the area. The lake is now best known as a trout and salmon fishing destination.
The Marble Caves, Marble Chapel and Marble Cathedral are unusual geological formations located at the middle part of the lake next to Puerto Tranquillo. They represent a group of caverns, columns and tunnels formed in monoliths of marble. The Marble Caves have been formed by wave action over the last 6,200 years.