The northernmost documented barrier wall so far is located near the village of Zarakovec, under the steep walls of today’s Julian Alps. It guarded the northern route to Italy, which led through the Škofja Loka Hills (Škofjeloško hribovje) and across the Soča River to northern Italy. Since in relation to other lines of the barrier system, the 277 m long barrier wall is located in a remote location, experts assume that there were even more barrier lines in this area in the Late Roman times, which to this day have not yet been discovered.
The barrier, which begins on the northern slope of the Bača Ravine (Baška grapa) under steep overhanging walls, is difficult to spot in the field. After a few metres, it is destroyed due to the construction of residential and commercial buildings. In the continuation, the barrier is intersected by the Grahovo–Podbrdo road and after about 100 m, the Bača River interrupts it as well. On the other riverbank, the wall is barely visible and it soon ends on the slope above the railway. So far, no towers or supports have been discovered in the framework of the Zarakovec barrier.