Tartaria I think makes a lot more sense when you inject historical accounts of scenery, environments and gods into the mix.

Nephilim, giants that were born of angels and humans procreating, existed both before and after the flood. But, a key takeaway from this is the sheer size of buildings, doorways and windows both in and on the Tartarian buildings. Tie in Nephilim and Gods, it then makes sense.

The historical accounts of environments within ancient Egyptian texts, Greek "Mythology", the Bible and the Apocrypha make Tartaria appear to be a very real thing. We still cannot emulate the architecture to this day with modern machinery, mostly because the way Tartarian structures were created isn't truthfully depicted by false historians, the modern methods of subtractive manufacturing. The stone instead was cast with other methods (e.g. melting stone and pouring the molten material into molds, or alchemic transmutation with sound/light). The freemasons invented the idea that stone was chiseled away, and kept the original creation method a secret.

Enoch, the great grandfather of Noah, also known as Hermes and Thoth, I believe lived through the time that Tartaria peaked, based on his recorded accounts of events, a time when angels lived with humans on earth as "gods". Highly recommend reading into them more!

Erasing the history of Tartaria was paramount to hiding the truth of our world and allowing evil entities to control it.