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Annunziata Caves

Annunziata Caves
Photo: Ascensione / CC BY-SA 4.0 / Wikimedia Commons

Annunziata Caves

Type
Ruins or archaeological site
Municipality
Ascoli Piceno (AP)

Source: site database, © OpenStreetMap contributors (ODbL).

The Annunziata Caves (Grotte dell'Annunziata) in Ascoli Piceno are a monumental structure of ancient Roman Asculum, built against Colle dell'Annunziata. Despite the name, they are not natural caves. They are substructures, that is, large niches with barrel vaults built to hold up the ground. They lean against the cliff on three sides and wrap around it entirely on the eastern flank. They rise 18 meters above the ancient ground level.

On the map

Points from the site database. Map © OpenStreetMap contributors · Protomaps.

History of the Annunziata Caves

Current studies date the construction to around the 2nd-1st century BC, between the Republican and Augustan ages. Comparisons with similar structures suggest that the substructures stabilized the ground to support an imposing building, plausibly the Capitolium. At the time the hill was bare of vegetation and the temple was clearly visible from the town below.

Similar substructures are found beneath the cathedral of San Ciriaco in Ancona, in Palestrina and Tivoli, and on the Capitoline Hill in Rome. For centuries the climb from the town to the hilltop followed the path running alongside the caves. Local traditions held that they were part of the Ascoli Acropolis, perhaps the residence of the praetor, or of a fortification system. These theories have no historical basis.

What to see at the Annunziata Caves

The complex is a large portico of vaulted niches parallel to one another. Their plans are rectangular and elongated and follow the irregular line of the cliff. On the southern side, 7 rooms and the retaining walls can be made out. On the eastern side there are 11 chambers, some partly underground. On the northern side, 4 chambers are fully visible.

A feature that may be unique of its kind is the "wedge-shaped" ending of the vaults, which probably served to anchor the structure more firmly to the rocky hill. The substructures are in pozzolanic concrete (emplecton), the walls in opus incertum and the vaults in opus caementicium.

The painter Giulio Gabrielli (1832-1910) portrayed the caves several times. One of his paintings from 1892 is kept at the Civic Art Gallery of Ascoli Piceno, in the Palazzo dell'Arengo.

How to visit the Annunziata Caves

The caves lie along the route that climbs the hill. One town itinerary goes up Via Pretoriana onto Colle dell'Annunziata and reaches the Roman ruins a little below the former convent. Before visiting, it is best to check accessibility and any restrictions.

Where the Annunziata Caves are

The Annunziata Caves are in Ascoli Piceno, on Colle dell'Annunziata, on the eastern side of the cliff. The area is now the Parco dell'Annunziata.

Near the Annunziata Caves

On the same hill stand the former convent of the Annunziata and the Pia Fortress. At the foot of the hill are the ruins of the Roman theater. To continue the visit of the town, the page about things to do in Ascoli Piceno suggests more stops.

Frequently asked questions

Are the Annunziata Caves natural caves?

No. The Annunziata Caves are artificial caves, technically Roman substructures. They are large niches with barrel vaults, built against the cliff of Colle dell'Annunziata. They were built to hold up the ground and, in all likelihood, a large building on the summit.

How high are the Annunziata Caves and how many chambers do they have?

The structures of the Annunziata Caves rise 18 meters above the ancient ground level. Today 7 rooms can be made out on the southern side and 11 chambers on the eastern side, some partly underground. On the northern side, 4 chambers are fully visible.

What were the Annunziata Caves for?

They served to stabilize the ground and support a monumental building, plausibly the Capitolium, the temple visible from the town. They date from the 2nd-1st century BC. The idea that they were the Acropolis of Ascoli is a local tradition with no historical basis.