By request. I give my theory or hypothesis as to why Gobekli Tepe was mysteriously buried 10,000 years ago....based on just some of the best evidence I could find. Included... Derinkuyu and the Thunderbolt & The Sphinx. (Anubis)
User Pixelspring:
I spent about 2 hours underground alone at Derinkuyu (underground city) in 1997, cost me about 3 dollars to get in... There was no other person in there the whole time I was there... It felt strange thinking people lived in there thousands of years before. They must have been little people.. not much over 5 foot on average. I say that because the tunnels are very low and you have to stoop on all the connecting ramps between floors .Â
I was amazed at the shear scale of the construction there, and in the surrounding countryside of Seljuk and NevĆehir. I spent a couple of days walking for kms up hidden valleys where no one goes except shepards and sheep. Everywhere, and I mean everywhere were homes carved into the rock. 100's of thousands of people .. that whole area was a massive prehistoric city. I hadn't linked it before to Gobekli Tepe until viewing this video!Â
They likely burried Gobekli Tepe to protect it from expected debris waves from incoming impactors...
 And then some of the population... perhaps the survivors of what already had happened, went underground to survive. Makes sense!
Wikipedia:
The Derinkuyu underground city is an ancient multi-level underground city in the Derinkuyu district in NevĆehir Province, Turkey, extending to a depth of approximately 60 metres (200 ft). It is large enough to have sheltered as many as 20.000 people together with their livestock and food stores. It is the largest excavated underground city in Turkey and is one of several underground complexes found throughout Cappadocia.