It is interesting to know when and where was the ancient town of Plovdiv founded. What is the place where the people settled and remained to live there for 8 millennia? This place is the hill known today as Nebet tepe situated on the hilltop plateau in the northern part of the three hills (Trimontium). The earliest settlements on the territory of the city are dated back to the 6th millennium BC. There were several prehistoric settlements on this territory, but the oldest and most important one was located on hill known as Nebet tepe. Initially the village was situated in a naturally sheltered and consolidated place on the front side of the northern hill. It gradually expanded towards the other hills to become the most significant Thracian city on the territory of Bulgaria. At that time the lands of today's Plovdiv were inhabited by the Thracian tribe Bessi. The scientists are still not sure if the name of the city at that time was Eumolpia or Pulpudeva. The complex of Nebet tepe continued to play an important role as an element of the fortification system of the city until the 14th century, with lots of improvements and supplements during the Antiquity and the Middle Ages. A notable finding of that later period is a reservoir of 350 cubic meters. http://www.visitplovdiv.com/en/node/521