[UCANSEE2]

The ocean must have been quite a bit lower quite a few thousands of years ago.

Not really. But the land does move up and down, all the time.

[muawiyah]

12,000 years ago the ocean was a lot lower ~ hundreds of feet lower. However, it was up a couple of hundred feet from it's peak ice age depth.

That'd ended about 14,000 years ago.

When the Younger Dryas happened (about 10,000 years ago, or 2,000 years in the future of the start of this monument ~ like from Jesus to us in a time sense) the ocean level dropped a bit.

In the immediate area here it was about 8,500 years ago that the Sahara was prime, and by 5,000 years ago the Sahara was desert ~ and everybody had moved out.

Earlier by a couple of thousand years ~ circa 5,500 BC, or 7,500 years ago, the black sea filled when the Mediterranean spilled in.

That's Koinkydinkally when the asteroid shifted orbits from tracking Earth to tracking Venus.

All of this means that "the past" was real, people reported it as best they could, and it was far worse than what we've had to face since that time.

[little jeremiah]

I’m not so sure about that. I’ve seen quite a few videos of underwater structures which are solid, all in place, no earthquake damage, all 150 to 200 feet (roughly, IIRC) underwater.