This is one of the numerous medieval fortifications, disposed in quite regular distances from the part of Dalmatia until the town of Karlovac. These fortifications controled restless, unstable and changeable tripple border called Triplex Confinum, between Ottoman empire, the Republic of Venice and Austria- Hungary. From the south to the middle part of Croatia, these fortresses were sending information by fire signals about the enemy movements within hours, which provided quicker preparations and organization for defence from the conqueror's attack.
This is one of the numerous medieval fortifications, disposed in quite regular distances from the part of Dalmatia until the town of Karlovac