10 Incredible Underground Lakes and Rivers

Reed Flute Cave in Guilin, China was discovered during the Tang Dynasty almost 1,300 years ago.Far below the Earth’s surface, where the sun rarely penetrates, is a world of twinkling glow worms, precious gems and limestone caves and mountains, a land inhabited by nature alone. Within this world are visions to rival many landscapes decorating our horizon; lakes lie still and calm, great networks