Marble Caverns of Carrera Lake

General Carrera Lake – A beautiful Lake shared by Chile and Argentina both. It has a surface of 1,850 km² of which 970 km² exists in the Chile and 880 km² in the Argentine. Carrera Lake is the biggest lake in Chile. On the Chilean side, there is beautiful emerald-green to turquoise-blue waters, and awesomely beautiful marble caves carved into passages and caverns. [Source]