Located at the entrance of the homonymous square on Corso Umberto I, with a rather unassuming stone portal, it extends along Via Duca degli Abruzzi with a single nave.

Dating back probably to the late 17th century, it is hypothesized that the name refers to its position on the ridge, which at the time descended steeply towards the northeast.

There are various hypotheses, none of which are documentable, regarding the steeply sloping roof, reminiscent of mountain dwellings.

Directly in front of the entrance, at a distance of no more than thirty meters, there is the Church of Saint Leonard, destroyed by the earthquake of 1783, while the Church of Saint Mary was damaged by the 1908 earthquake and quickly restored. Presumably spared from the earthquake, a beautiful painting is preserved inside, depicting Saint Leonard, invoked against Turkish raids.