Nice that you managed to find the path. The entire route of the mulatjera that artillerymen built in 1940 I have drawn on OSM and it's available in all maps using this source. Real problems with "visibility" start on the section from the barracks towards Zadnjiški ozebnik where scree fields covered the walls. But orientationally nothing special. As always - path not marked not maintained and as such strongly at own risk.