The Ferriere Valley (also know as the Valley of the Mills) is a State Natural Reserve established in the 1972 to protect endemic species like the fern Woodwaria radicans and the salamander Salamandrina terdigitata. Magical place where there is a special microclimate that hosts vegetation of mixed forests of alder and hornbeam.
The itinerary is of medium difficulty because there are several crossroads although well marked. It is recommended for those who already have experience of trekking, starting with equipment and suitable clothing: raincoats, hiking shoes, long pants and a knowledge of the path ex ante or at least provided with our map of trails. Arriving to Agerola reach the General Avitabile square in the hamlet San Lazzaro. From here take Miramare street and after 50m turn left and follow Radicosa street following the CAI signs. Follow the signs toward Mount Murillo; here the road climbs into the woods with the stairs in limestone rock, among the terraces and chestnut woods. After the climb go straight on the ridge and at the first fork, keep right. The trail continue on the flat and downhill through the Santa Croce valley.
Following the CAI signs you reach a stony ground where flows the Acqualella spring. The trail continues through deciduous forests and chestnut woods. You reach the junction that going right leads to Pogerola: here continue down at the table in the picture indicating the path Giustino Fortunato, then follow the river until the remains of the aqueduct of the hydroelectric station. Turning left you can go to admire the waterfall in the photos, while turning right continue on the path that leads to the main square of Amalfi. Along the way you can see the ruins of the old ironworks from which the name of the valley and the ancient paper mills. With a length of about 10km and a difference of altitude of about 150m uphill and 800m downhill, it takes about 4 hours to reach the natural reserve, and another hour to reach the city of Amalfi.