It rises from Colle Finestra (1,060 metres (3,480 ft) above sea level), a mountain saddle between Monte Acellica and the Terminio sub-group in the Monti Picentini, sub-range of the Apennine Mountains.

On 8 May 663, a large detachment of the army of the Eastern Emperor Constans II, which had invaded the Lombard Duchy of Benevento, was defeated here in battle by the army of King Grimoald, under the joined command of Mitola, Count of Capua, and Grimoald's son, Romuald.

Having already abandoned the siege of Benevento and every small conquest done in Italy, Constans, falling back to Naples, lost any hope to push back the Lombards and re-establish Byzantine sovereignty over southern Italy.

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