Also, we may not know the shape of the world.
And what about that ice-wall.
Is it real? Is it all the way around?
If part of it melts... what?
And what if it is hold a sea back?

What if the firmament is a sea with more water?
And there is an exchange of waters.
You know, like God changing the water in a fish tank.
Every fish tank, no matter how good you clean it needs to have its water changed.

I do not know what the shape of the world is, and so will not rule out anything.

And damned if we do not pay attention to real archaeology. (have to believe we came down from the trees... 6000 years ago)
Nor do we pay attention to real cycles.