The Attractive Rainbow Cave In China - There Are so many wonder of the nature in the world. It feels great to see them. Hamariweb is showing you a natural attractive cave in China which is the example of beautiful nature. Reed Flute Cave is a landmark and tourist attraction in Guilin, Guangxi, China. The reed flute cave is over 180 million years old. It was discovered in the 1940s by a group of refugees. This cave is also known as The Art Palace of Nature.