>>17854059
>>17854123
It was the Cattle-cultures that had dispersed into europe FROM anatolia that moved back in haste when the meltwater-pulse induced climate-catastrophe forced them to relocate back into eastern anatolia that still had relatively stable weather. The European cattle-people had learned to move large glacial boulders out of the way with their cattle, which in europe manifested as burial tombs, megalithic fences and henges, and simple dolmens. When they all merged into mesopotamia again, they merged their knowledge of the northern atlantic region and documented their pre-climate catastrophe geography into a memorial shrine.
tldr;
Göbekli tepe and similar tepes was proto cattle-herders moving BACK to anatolia with a specialized knowledge of how to tumble really large boulders due to having learnt to tumble similarly large european glacial boulders out of their pastures to construct family tombs and similar.
It was the merger of this cow-based tumulus culture and newer Horse-based tumulus culture that sparked the Egyptian Pyramid craze.