The Loka Trail leads from the centre of Dobrna through the spa on the road to Klanc, passing the many vineyards on the slopes of nearby hills. The trail climbs up to the village of Loka pri Dobrni.
The Loka valley is characterised by karst terrain with typical reddish-brown soil (terra rossa), dolines, sinkholes and a karst cave, Osrečanova zvonica. Continue on past the Čerjak chapel to the valley of the mills, where you will find remains of watermills over 300 hundred years old, namely the Gregor, Petrač and Sedevšek mill as well as two Vovk mills. Over 450 years old, the upper Vovk watermill is the best preserved; in the past it was used to supply flour for the Snake Castle. Restored in 2007, the mill is now open to visitors, offering demonstrations of the mill in operation and the milling tariffs used before World War II . The mill and its surroundings are a great draw for tourists, giving them an opportunity to enjoy the fresh air by the stream in this peaceful valley and experience a small part of the past that the Pungartnik family has so successfully preserved. Forpeople who favour homemade products, there is freshly milled flour, homemade bread and other goods.
From here, follow the marked trail to the Lamperček homestead, where you can stop to see the deer and sample some homemade food. Continue on to the Blažiš homestead, which boasts a fascinating collection of antiques – old bicycles, swords, everyday items and pictures of Dobrna and the surrounding area. Enjoying the view of the remains of Snake Castle, follow the marked trail back into the valley, past the ponds to the New Castle in Lokovina. Take a left and return to the centre of Dobrna.