Two young climbers are practsing on the wall of Etxauri in Navarra and during the climb the younger one thinks he can hear bells ringing. His companion explains that it is no immagination because the riniging is made by the "Stonecutters' Cross", a votive cross erected in 1728 in a place that, at that time, was considered to be inaccessible. The story is the prompt for a filmed reconstruction of the old climb.