Like its better-known counterpart in Monte Sant’Angelo, the Santuario Grotta di San Michele, or Grotto Church of Saint Michael (also known as Saint Michael’s Cave), is dedicated to Saint Michael the Archangel, who features prominently in the sacred cavern.

On the floor of the cave is the main altar, featuring a statue of the Archangel. Behind the altar there is a natural fountain, a basin filled with rainwater dripping from the ceiling. The water is said to be blessed and have miraculous healing properties.