Start from the main square in Črni vrh and walk to the church across the road, then turn right. Turn left at the end of the fence and walk along the tarmac road running past the church. Continue walking past the resting area where the road ends, then turn into the forest and cross the hill. When you reach the dirt track, turn right towards the isolated farmstead. 50 m ahead, at the electricity pole, make a sharp left turn off the road. The turn is poorly marked. Pass through a narrow gap between the rock and cross the meadow on the other side to reach the macadam road, which gives way to a tarmac road. You will have arrived at the small hamlet of Spodnje Griže. 15 minutes.
Go left along the tarmac road which gives way to a macadam road only a few metres later at the picturesque hayrack. The level road runs through spacious meadows and grassland in an idyllic rural setting. Turn right when you reach the tarmac road and walk for 15 minutes until you reach a crossroads. A religious monument stands on the traffic island in the middle of the crossroads. You will be standing in the elongated hamlet of Idrijski Log. The hike from Spodnje Griže takes approximately 40 minutes. At the crossroads, go left along the road and walk past the holiday house. Turn right onto the macadam road immediately after the house (approx. 100 m), when you reach the stone scarp.
Walk past the newly-constructed building and head into the forest. The road makes a sharp left turn after about 5 minutes. Here, the Via Alpina route turns right onto the dirt track. After about 100 m, turn right again and climb up a secondary dirt track, which soon gives way to a narrow path. Climb up across the clearing onto the top (Smrekovec (729 m)), then walk lower down the forest road to reach another road. Turn left here and walk to the Pevc farmstead. 15 min. At the farmstead, a narrow road branches off to the left. Cross it and walk down the broad forest road. When the terrain levels out, make a sharp left turn. The last section of the route overlooks the Idrijca river valley and is very steep. You will reach the road at the dam, opposite which is the beginning of a water channel.
Go right along the road for 200 m until you reach a wooden footbridge across the Idrijca river. 30 minutes. Cross the footbridge onto the left bank of the river. Walk along the very good pedestrian path which follow the channel. Go right along path right to the closed mercury mine for which Idrija is renowned. Follow the water channel all along the way. The water flows into the large stone building that can be seen on the right as you pass the mine. This is the so-called "Idrijska kamšt" - a large waterwheel in the building drives the pumps that draw the water from the mine. (The wheel is the largest in Europe with a diameter of 13.8 m). Walk along the road until you reach the crossroads then follow the smaller branch past the small hydroelectric power station Mesto and the school playground. Walk through the metal construction across the road to reach the Idrija bus station. The walk along the water channel to Idrija takes 30 minutes. This is one of the shorter stages and takes 2h 15 minutes.