Markova Kula (Marko’s Tower), v.Koreshnica, Demir Kapija
The archeological site Markova Kula, v. Koreshnica-Municipality of Demir Kapija is located on the left bank of the river Vardar at an altitude of 416 m. and is a fortification from Hellenistic, Late Antiquity and the Middle Ages.
The fortress surrounds an area of 1 hectare and is located on the hill Juruchki Kamen, a branch of Konechka Mountain which together with the hill Krastavec, a branch of the mountain Kozuf (Meglensko-Mariovo mountains) forms the entrance to the Demir Kapija Gorge.
The oldest remains of this site date from the end of IV and beginning of III century BC. In the Middle Ages the fortress was rebuilt. It is considered that this fortress together with "Kale-Strezov Grad", "Kale-Markov Grad" and "Crkviste" represent the medieval military-political and strategic complex "Prosek".
On the ground there are remains of massive walls made in opus quadratum which are part of the defensive architectural formations of the fortress.
One of the most significant discoveries is the lead seal that speaks of the time of the siege of the Byzantine Emperor Alexius III Angel of the city of Prosek, after which, after a good defense, Prince Dobromir Hrs confirmed the independence of his principality.