One of the many legends heard in Garfagnana regards the origin of the hole in the mountain. Legend has it that it was caused during a tremendous clash between San Pellegrino and the Devil himself.

The Devil, tired of seeing the saint prey and sing all day, sought to tempt him while he was making a beech wood cross, all in vain. Irritated, the Devil slapped the saint so hard he was knocked down. San Pellegrino slowly got back up and also tired of the continuous torments he was made to endure, instead of turning the other cheek slapped the Devil right back so hard he was hurled against the crest of the mountain. The Devil hit the mountain with his head, the terrible impact created the hole that we can see today.