General Carrera Lake (Chilean side) or Lake Buenos Aires (Argentine side) is a lake located in Patagonia and shared by Argentina and Chile. Both names are internationally accepted. The waters of General Carrera Lake are beautiful, a glittering combination of emerald, turquoise, aquamarine and azure. The sky may be blue but the waters seem bluer still. However along its banks, directly below the Andes, sheer marble cliffs present themselves to further astound the visitor. Over the millennia they have been weathered and folded to create a stunning cathedral of marble.