The engineers, who built the Mosul dam 30 years ago ... The rock on which the dam is built is gypsum, which dissolves in water, leaving deep channels under the dam which have to be constantly ...

Iraq’s Mosul Dam has been called one of the most dangerous dams in the world. If it fails, it could unleash a disaster of unimaginable scale. In this video, we dive into the risks, structural issues, ...