Marble Caves, Lago General Carrera (Lago Buenos Aires), Patagonia, Chile, Argentina

The Argentine side of the lake is relatively easy to access, through strip of plains that was first used by the Tehuelches, and then by explorer Francisco Moreno. The National Route 40, created in the 1920s, also makes uses of it. The Chilean side of the lake has been mostly isolated, and was for years accessed through Argentina, until the creation in the 1990s of the Carretera Austral, which connected it to the rest of Chile, and permitted the expansion of tourism in the area.
A car ferry operates between Puerto Ingeniero Ibáñez and Chile Chico in the Chilean sector of the lake.
The lake is known as a trout and salmonidae fishing destination, and also for its Marble Cathedral (marble cave) located at the centre of the lake.