It is a quite challenging via ferrata, though not particularly long. It takes place in a canyon, formed by the Rio Salagone, just south of the summit on top of which stands the Castle of Drena, which can be reached at the end of the path forward.

The Lastoni di Dro are a large inclined limestone slab, located on the left bank of the Sarca Valley, at the height of Dro:

This trail follows, at least in part, the route that a teacher ran through, years ago, to reach the Case Caproni, on the left side of the Sarca Valley, near Dosso Grande.