08-23-2021, 07:46 AM
(08-23-2021, 12:57 AM)727Sky Wrote: Something I have been thinking about is the possibility that the thing that left the tracks is a boring machine; the kind that is used to make tunnels around the world ? I do not know what it would take to make such a machine submersible and water tight but it could probably be done ?
Good thinking, but what gets me is that the tracks end. My thinking is that the machine crawled along the bottom then raised and left. No need to surface.
Kind regards,
Bally. :)