Archaeologists found a castle,belonging to a governer, appointed by the Mediaeval Bulgarian tsar Ivan Alexander of Bulgaria, reports BNR.
Its remains are on top of Perperikon, near the only tower in the stone city. Perfectly shaped premises and corridors have been uncovered. The foundations of the buildings are 3 metres high.
The history chronicles reveal that after conquering the Rhodopi Mountains in the middle of 14 century, Ivan Alexander of Bulgaria appointed his representative for the region.
The evidence lies in the ruins of the old castles, where coins and fragments of expensive porcelain were found. This is the place, where the only golden seal belonging to Ivan Alexander was discovered, now property of an American collector.
According to the head of the expedition Nikolay Ovcharov, this fortress was of utmost importance, because of its highly secure fortification and the immediate proximity to Bulgaria’s biggest goldmines.

source: news.bg