Quote Originally Posted by CRAPPIEHUNTER68 View Post
Looks like a old road to me. I have one image somewhere from Grenada that looks a lot like that and I know it is an old submerged road.

The first ones look a lot like the gravel elevators I see here in the gravel pits still functioning. See if you can match this up. to the above SI image.
I think it flooded out with the machines in place just like your pics show.