@CNN: There are over 400 mud volcanoes in Azerbaijan, more than anywhere else in the world. Pockets of subterranean gas force their way to the surface, belching out methane and a muddy mix of water and oil. https://t.co/gTE7hPzUdv https://t.co/M8ZI3LWZB5
There are over 400 mud volcanoes in Azerbaijan, more than anywhere else in the world. Pockets of subterranean gas force their way to the surface, belching out methane and a muddy mix of water and oil. https://t.co/gTE7hPzUdv pic.twitter.com/M8ZI3LWZB5
— CNN (@CNN) August 31, 2018