A Natural Wonder in Chile
The Marble Caves, known in Spanish as Capillas de Marmol, are located in Chile. They sit in the remote Patagonia region of southern Chile, on the shores of a large glacial lake called General Carrera Lake. The caves are one of the most striking natural wonders in all of South America.
Carved by Water Over Thousands of Years
The Marble Caves are exactly what their name suggests - caves formed in solid marble. Over thousands of years, the waters of the lake slowly wore away at the marble cliffs, sculpting smooth caverns, arches, columns, and tunnels. The result is a set of swirling, polished rock formations that look almost like architecture made by human hands rather than nature.
A Play of Color
What makes the Marble Caves so famous is the way they glow with color. The marble itself shows soft whites, blues, and greens, and the deep turquoise water of the glacial lake reflects up onto the cave walls. The exact look changes with the seasons and the light, as the water level of the lake rises and falls. The caves can only be reached by boat or kayak, which adds to their sense of being a hidden treasure.
Source
This article was written using information from Wikipedia.