"Riddle+of+the+stone+age+giants"
![Riddle of the Stone Age Giants](https://image.tmdb.org/t/p/w300/d96uWU22jJxvpIj8ro1z4dmgEDq.jpg)
Riddle of the Stone Age Giants
The discovery of Gobekli Tepe 20 years ago changed our understanding of the history of humankind. Now, newly-discovered skull carvings reveal even more about how and why civilized societies developed.