The Weird Pit of Magma Beneath Yellowstone Is Still a Mystery
[livescience.com]
so, the arse of the world has a boil that could pop
I think I read something recently about them being concerned this could blow with the right plate shifts? Not positive though.
It could, & if it does N. Am. is screwed & the rest of the world has major problems, too! & it's supposedly overdue!