Down in Chile's Patagonia region along its border with Argentina, on a glacier freshwater lake (South America's second largest) called Lago Carrera near the towns of Chile Chico and Puerto Tranquilo are enormous boulders of solid marble, weathered by wind and sea to form natural caves and tunnels that are one of South America's natural wonders.
The Marble Caves (Cuevas de Mármol) draw visitors from far and wide to kayak, canoe, and take boat excursions through these phantasmagorical rock formati
