The route leaves from Mulino del Ghitello (Visitor Center) and runs along the river Breggia. You will find along the trail the old cement works, the iron bridge, the group of buildings of the pasta factory (Beerhouse) and the big Saceba cement works. The series of factories covers a period going from the 17th century to present times.
Beyond the big cement works and after crossing the river, the route follows Val dala Magna and gets to San Pietro hill, where you will find the ruins of a medieval castle and the Red Church. From here you will enjoy a great view over the Park territory.