Nature as an artist :)
These stunning caves around the world can be found in some of the world’s most beautiful places in Asia, North America and Europe. Although some of the caves are open for public, like Phraya Nakhon Cave in Thailand, the majority of them are only open to extreme adventurers who have to get their passes in advance. The people who get the chance to visit these beautiful caves are required to use some special equipments. Our thanks to the professional photographers to show us wonderful caves and help to learn about mysterious places on earth that are still unseen by humankind.
view all the images here: http://www.colorsandjoy.com/15-majestic-caves-around-the-world/