In the municipality of Aranga, on the road that goes to Iglesia-Mende-Fervencedo, before reaching the latter village (Fervencedo), we will take the path that goes down to the river to cross it and follow the course of the river. The access is not very difficult if we want to see the waterfalls from the main path, but if we want to go up close to the river, the difficulty increases. The route is not signposted. The Fervenzas or Bexo river, is a tributary of the Mandeo river which, in this area, descends deeply embedded, giving rise to several waterfalls of more than 5 m.