Reed Flute Cave, Guilin, Guangxi, China
The cave got its name from the verdant  reeds growing outside it, with which people make flutes. Inside this  water-eroded cave is a spectacular world of various stalactites, stone  pillars and rock formations created by carbonate deposition. Illuminated  by colored lighting, the fantastic spectacle is found in many  variations along this 240-meter-long cave.