jan 1, 9000 BC - Gobekli Tepe

Description:

Göbekli Tepe is an archaeological site in the Southeastern Anatolia Region of Turkey . The tell (artificial mound) has a height of 15 m (49 ft) and is about 300 m (980 ft) in diameter. It is approximately 760 m (2,490 ft) above sea level.

The tell includes two phases of use, believed to be of a social or ritual nature by site discoverer and excavator Klaus Schmidt, dating back to the 10th–8th millennium BCE. During the first phase, belonging to the Pre-Pottery Neolithic A (PPNA), circles of massive "T-shaped" stone pillars were erected – the world's oldest known megaliths.

Photo: By Teomancimit - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=17377542