This vertically arranged stone formation is thought to have been created by humans roughly 7,000 years ago. and as drought drags on in china, another rare site, receding waters of the yangtze river uncovering ancient buddhist statues thought to be hundreds of years old. >> translator: i think the reason why our ancestors built this was because they wanted to pray for a peaceful world and beautiful country. i hope that wish can be passed on forever. i hope the water levels can go up naturally and we may still have a peaceful and healthy world and country. >> reporter: ancient discoveries among ...