Take the road to Kosmas. After 6.2km (on the 3rd sharp left curve) there is a dirt road going into the valley on the right. From there you can see the big red wall up the mountain. Park there and follow the red dots on the right side of this road. After the sheepfold the path goes to the right and it is marked with stonemen. The red dots on the left lead to the sector “Berliner Mauer”, which is more to the left. 25min