This network of subterranean lakes, caves, and caverns houses translucent formations of stalagmites and stalactites, and includes the crystal clear Cahow Lake. A sloping path and a few steps lead to Crystal Caves, which was discovered in 1907; at the bottom, about 36m (120 ft.) below the surface, is a floating causeway. It follows the winding cavern, where hidden lights illuminate the interior. In 2002, a second cave was opened to visitors. All tours through Crystal Caves are guided. Using the lighting system, the guides make shadow puppets and are fond of pointing out the similarity to the skyline of Manhattan. If you suffer from claustrophobia, you might find this space too tight. Recent improvements have included a small cafe and a gift shop.