Mlinarica is the left tributary of the Soča and has its source below Prisank and Razor. The stream has cut troughs almost a kilometer long and more than 80 meters deep, which in some places are only one meter wide. Trapped rocks have created natural bridges in several places. In the inner part of the troughs, which is only accessible with special equipment and was only explored in 1989, there are several pools, waterfalls and larger rapids.From the viewpoint at the mouth of the stream you can admire not only the mighty walls but also the picturesque 8-meter-high waterfall, which falls into a wide pool. The stream got its name Mlinarica because of its wild, torrential nature.When its water rises in a narrow canyon in heavy rain, it "grinds" everything in front of him.

On the road Bovec-Vršič we see a small parking lot between the 50th and 49th serpentine, where we park (near the parking lot there are tourist signs about Mlinarica).From the parking lot, head towards the marked hiking trail, which first descendes slightly and then crosses the suspension bridge over the Soča River. On the other side of the river, we continue the path that begins to climb slightly and leads us in a few minutes to the entrance of the Mlinarica troughs. The passage directly to the troughs is forbidden due to rockfall.

In ancient times, the vicar of Trenta had sacred beech trees. One day he entrusted them to his custodian. But he was once so drunk that the villain, who was always on guard, seized the opportunity, grabbed his beech trees, and fled with a haste that was unique to him. At a violent speed, however, he struck terribly against a rock and fainted. The water of Mlinarica flowed out of the cracked rock.