Göbekli Tepe is a Neolithic archaeological site in the Southeastern Anatolia Region of Turkey. Dated to the Pre-Pottery Neolithic, between c. 9500 and 8000 BCE, the site comprises a number of large circular structures supported by massive stone pillars – the world’s oldest known megaliths. Many of these pillars are richly decorated with abstract anthropomorphic details, clothing, and reliefs of wild animals, providing archaeologists rare insights into prehistoric religion and the particular iconography of the period. The 15 m (50 ft)-high, 8 ha (20-acre) tell also includes many smaller rectangular buildings, quarries, and stone-cut cisterns from the Neolithic, as well as some traces of activity from later periods.
As of 2021, less than 5% of the site has been excavated.
https://en.wikipedia.org/wiki/G%C3%B6bekli_Tepe