A Farmer found something in the rock, and whole world turn upside down. 12,339,738 views Sep 7, 2017 https://www.youtube.com/watch?v=-bFwI2XrYEQ the hidden place for millions of years has been reavled recently. we have to save the beauty of nature. share if nature is amazing and to be presevred. Hang Sơn Đoòng is located in Vietnam. In 1991, this cave was discovered by Hồ Khanh. It's been preser..