Subsequent investigations determined that the foundations of the fort are from the period of Emperor Justinian, refortified and modernised by the Serbs.

It was probably manned since the earliest mention of Vranje in 1093, and during the epoch of Nemanjić dynasty, until the final fall of the Serbian Despotate.

When Marko had to get away faced with the Turkish supremacy, he leapt with his flying horse Šarac, and left a print of his enormous hooves.

During the archaeological excavations that were carried out over two and a half decades, the remains of architecture - parts of fortifications, residential buildings and churches.

In much better condition remained a bastion on the east side of the ridge where there are preserved traces of walkways and parapets.