 The most remarkable natural curiosity in the land of the Hirpini was the valley and lake, or rather pool, of Amsanctus, celebrated by Virgil in a manner that shows its fame to have been widely spread through Italy.It is remarkable as the only trace of volcanic action remaining in the central chain of the Apennines.The country of the Hirpini, despite its rugged, mountainous character, was traversed by several Roman roads, all of which connected to the Via Appia.