In May, when the cave is open to the veneration of the faithful, a representation of the scene of th imprisonment is visible on the inside. Papier-mâché dummies of the three Saints brothers stand in front of Tecla, the Roman soldiers and Tertullo, represented with dark skin. Over the years, some visitors have started a strange habit. They throw coins into the cave through the grates.
This way, either leaving an offering or just making a wish or a prayer, coins are spread everywhere and create, at the foot of the representation, an actual and unusual carpet of coins.