Casoli is a comune

Comune

In Italy, the comune is the basic administrative division, and may be properly approximated in casual speech by the English word township or municipality.-Importance and function:...

and town

Town

A town is a human settlement larger than a village but smaller than a city. The size a settlement must be in order to be called a "town" varies considerably in different parts of the world, so that, for example, many American "small towns" seem to British people to be no more than villages, while...

 in the Province of Chieti

Province of Chieti

The Province of Chieti is a province in the Abruzzo region of Italy. Its capital is the city of Chieti.It has an area of 2,588 km², and a total population of 381,993...

 in the Abruzzo

Abruzzo

Abruzzo is a region in Italy, its western border lying less than due east of Rome. Abruzzo borders the region of Marche to the north, Lazio to the west and south-west, Molise to the south-east, and the Adriatic Sea to the east...

 region of Italy

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

: it is situated on a foothill of the Majella

Majella

The Maiella is a massif in the Central Apennines, in Abruzzo, central Italy, at the boundary between the provinces of Chieti, Pescara and L'Aquila....

 mountain, at the base of which runs the Aventino River, tributary of the Sangro. As of 31 December 2004, it had a population of 5,901 and an area of 66 km².

Casoli borders the following municipalities: Altino

Altino, Abruzzo

Altino is a comune and town in the Province of Chieti in the Abruzzo region of Italy. It is located on an impressive rock spur commanding the valley of the Aventino river. The valley is richly cultivated with orchards, fruit, grapes and olives....

, Civitella Messer Raimondo

Civitella Messer Raimondo

Civitella Messer Raimondo is a comune and town in the Province of Chieti in the Abruzzo region of Italy...

, Gessopalena

Gessopalena

Gessopalena is a comune and town in the province of Chieti in the Abruzzo region of central Italy....

, Guardiagrele

Guardiagrele

Guardiagrele is a town and comune in the province of Chieti, part of the Abruzzo region of central Italy. It is situated in the foothills of the Maiella mountain at an elevation of around 576 metres...

, Palombaro

Palombaro

Palombaro is a comune and town in the Province of Chieti in the Abruzzo region of Italy...

, Roccascalegna

Roccascalegna

Roccascalegna is a comune and town in the province of Chieti, part of the Abruzzo region of southern Italy....

, Sant'Eusanio del Sangro

Sant'Eusanio del Sangro

Sant'Eusanio del Sangro is a comune and town in the Province of Chieti in the Abruzzo region of Italy...

.

History

It was the ancient Cluviae, a city of the Caraceni

Caraceni (tribe)

The Caraceni or Caricini or Carricini were a tribe of the Samnites. According to Ptolemy, they inhabited the most northern part of Samnium, bordering on the Peligni and the Frentani; but more especially the upper valley of the Sagrus . The only city that he assigns to them is Aufidena...

: the territory was most probably conquered by Lombards

Lombards

The Lombards , also referred to as Longobards, were a Germanic tribe of Scandinavian origin, who from 568 to 774 ruled a Kingdom in Italy...

 in the 6th century.

The medieval name "castri de Casule" was first recorded in 878 AD in the Memoriatorium abbatis Berthari, a manuscript conserved in the Abbey of Monte Cassino.