Yes, but the size of this one makes it hard to believe that could have been the process here? Then there should be similar others in the area.
not necessarily....
Certainly the processes by there self are not unique though the formation is. I would be hesitant to think that just because only one was found others do or did not exist.
Certainly the area according to the map was heavily involved with the ice fields.
but who knows....lol
How about a tiny black hole bored through the earth and this is the ‘exit hole’ ?
(Mel’s hole on the other side of the earth would be the entrance)