The first Palaeolithic sites in Thrace came to light in the 1960s thanks to the research Professor D. Theocharis carried out in the Evros river triangle. New sites have been located recently, in a new geomorphological research held in the Rodope plain. The older as well as the new sites, the open-air locations and finds are the product of survey. Nevertheless, an excavation has yet to be carried out and indications of Palaeolithic habitation have not been located in caves or rock-shelters till now.
The sets of tools indicate exclusively the Middle Palaeolithic Era.
This first data of human habitation in Thrace during the Palaeolithic era combined with the geographic position of the region -being on the threshold of Europe, from the Asiatic to the European area- and the wealth of finds from the neighbouring countries calls for pertinent research.