3-Meter High German-like eucalyptus gates (from 1817) will welcome you to the hosting chamber—98 feet high. Then, discover stalagmites and stalactites hanging from the cave’s walls. Stroll through carefully illuminated tunnels whose ceiling reflection on water mirrors causes the visual effect and feeling of being on the edge of an abyss. There are 28 of these saturation tanks. Get to the heart of the mine, literally. It’s a lighted 1.6-ton carved crystalline halite salt crystal—the biggest in South America. Visit the natural history museum, where you will find fossils of the mastodon, megatherium, plesiosaurs, and ammonites. Stroll through the dedicated chambers deep inside the mine, as you hear in-depth commentary on Indigenous history.