[SunkenCiv]

This is fringey, should be of interest. I'd long forgotten about this site, and had never seen pics or even these purported pics:

The Great Pit of Zawyet El Aryan in Egypt | Ancient Architects

[wildbill]

obviously this was simply a bathtub for Gods who had gigantic stature. The oval thingee is the tub’s stopper for draining out the water.

If the idea of the nearby pyramid being a water pump is true then it makes sense to have the bathtub there.

Must be refreshing after a long day in Egypt doing godlike things to have a nice relaxing bath.