Further south we find the village of Drena with its castle. From the keep opens up a splendid view of the valley and the Moroccans, the huge stony landslide of the postglacial period that you cross as you descend towards Arco. The castle of Drena can also be reached via a super adrenaline via ferrata, the Rio Sallagoni via ferrata, which allows you to overcome a canyon and small waterfalls, in a “very wild” environment, arriving at the foot of the castle!