Over the hill, just five kilometers from the village Platanias, called Kales or Acropolis, an Acropolis has been detected that indicates habitation from prehistoric times until the 6th century AD.  
The whole defensive system is of great interest. Powerful wall surrounds the entire citadel while other fortifications have been identified as well.  
From archaeological evidence up to now (coins, shells, jewelry, metal objects, tools, stone tools, weapons, figurines, bone tools, glass vessels) the habitation from prehistoric times to the Byzantine period is clear and absolutely confirmed.  
With the continuation of the excavation new aspects of life within the citadel will be highlighted as well as for the antiquities of the region over the centuries. The excavation is conducted under the supervision of Prehistoric and Classical Antiquities of Kavala.