The Reed Flute Cave is a popular landmark and is located in Guilin, Guangxi, in China. A natural limestone cave with beautiful multi-coloured lighting, the Reed Flute Cave is over 180 million years old. Named after the reeds growing outside the cave that are used for making flutes, the Reed Flute Cave has been a popular attraction for over 1200 years. While the cave is filled with stalactites and stalagmites among other rock formations, multi-coloured lights have been used for illuminating the cave.