From my understanding (I think we all know what it means if somebody on the internet says 'my understanding'): There is a giant pipe connecting to regions with

From my understanding (I think we all know what it means if somebody on the internet says 'my understanding'): There is a giant pipe connecting to regions with liquids in them. Liquid flows from region to the other because that is what nature says it will do. The way you stop the leak is by closing that pipe, without creating any other holes connecting the regions. This pipe did have a shutoff valve for exactly this situation, but it failed and will not activate. So basically your option is to squeeze the steel pipe shut, and hopefully this doesn't weak the pipe causing it to break. Also, apparently the pipe is mostly covered by rock, so somehow you have to work around that. I'm sure we've all tried to stop the water from coming out of the garden hose by putting a kink in the hose. It's like that, except now you can't reach the hose because it's under lots of rock, and really far under water. You could put your thumb over the top, but there is too much pressure.