The settlement of Karos is located about 200 m. north of the village of upper Qeparo, on the top of the rocky hill of with the same name (Karos), which is separated from the west side of Gjivlashi Mountain in the form of a half cone, with a height of 450 m. above sea level. The western side of the hill ends in an abyss that falls 90 degrees in the valley of Kudhesi, while from the north and south the great slope makes it very difficult to climb, creating a natural protection of the hill.
From the top of the hill is possible to observe the valley of Qeparo, the coastline and the valley of Kudhesi. The hill has been returned to a fortified site, through the construction of three surrounding arches. Thus, the entrance from the east side was protected, which was the most convenient crossing point. Since the hill is semi-shaped and one side is cut down till the bottom of the hill to the west side, the walls have taken the form of extreme arches at the edge of the abyss.
On the eastern site the slope is mild and here is the main settlement. The main defence line follows the natural contours and has an entrance (1.8 m width) positioned in the centre by the east side. This wall is 340 m long and 3 m wide. The highest preserved height is 1, 5 m. After the entry, two lines of protection have been added to reinforce it. The materials excavated by archaeologists give a broad record starting with the first residential phase dating to the Early Iron Period and continuing until the 4th century AD.