Well, assuming it is indeed---another --- pyramid then we should consider just why? The interesting New Grange hill in England comes to mind. Bosnia. So if not death monuments (no) or adoration to the Gods (no) or astronomical fixes (possible) then the work these would have required would have been because it was a matter of life and death.
You had to get water from the sky.
And it is not too far fetched to see that the survivors of a magnetic embrace that levitated several miles of water several miles above the surface of the Earth, would have been in many places, former cities packed with people who furnished the manpower on the spot.
We have the myths to support the idea, the evidence of existing pyramids, a genetic record jammed with mutations, massive migrations of hordes of people all looking for the same thing, a place with food and water which led to fortified hills or isolated islands being secure holdouts.