Three years ago we Ithe intel community) received a tera byte of archives from Russia. One of the files was a film chronicling a massive natural gas mud spout due to a failed NG drilling project. The startling thing is that they used a nuke to collapse the rock and seal it off, after watching the prep and the detonation of the nuke our translator stopped talking and blinked hard a few times. He stopped the film and wrote something down then turned to us and said,”the narrator just said this is the third time they used a nuke to cap a gas well blow out.” We were stunned that the US had missed any of these nuke dets. I am not saying this is one of those but truth can be stranger than fiction.
There’s a possibility that would explain the formation! The age could be a fabrication. I’m guessing the thing might only be 40 - 50 years old.