This is a preliminary report on survey work which was carried out by the Ephorate of Antiquities of Komotini in the southeastern part of the Rhodope plain in Thrace. For the first time in this part of Greece the research, still in progress, led to the discovery of Palaeolithic material which dates to the Middle Palaeolithic period. Four different findspots with stone elements of this period have been located in the area of “Krovili-Petrota”. Among the finds is a biface made on lamina, one of the very few artifacts of this kind that have been recovered in Greece so far.