Right after leaving the Zamarovce village, follow the asphalt road, heading for the Skalka church. You'll have two options. First option: you take first right(~300 m after leaving the village) and get down from the asphalt road. Then you take first left and keep heading straight. You'll eventually arrive right next to the wall. It's possible to park there. Second option: after leaving the village follow the asphalt road. Park next to the church. There are two dirt paths going from the church down to the wall.