Grotte di Isòvol

Isòvol is a municipality in the Cerdanya with 13 inventoried caves, all developed in limestone. Together they total 555 m of passage and reach a maximum depth of 13 m. The longest cave is the Cova Gran d'Olopte, at 232 m, followed by the Cova B d'Olopte (134 m), the Cova dels Al.luvions (60 m), the Cova d'en Manent (40 m) and the Cova d'Isòvol (17 m).

The Cova Gran d'Olopte, near Olopte, has two entrances separated by about 7 metres and corresponds to an ancient fossilised drainage conduit, with erosion-corrosion forms and scarce lithogenic forms. The Cova B d'Olopte, also with two entrances, was closed in 2021 to protect the archaeological heritage, and is a fossil resurgence of the Cova Gran or Cova A d'Olopte system.

Other cavities in the municipality are the Cova dels Al.luvions, with fluvial sediments that give it its name; the Cova d'en Manent, on the Tossal d'Isòvol, near the summit and to the N of the small village of the same name; the Cova d'Isòvol, explored and surveyed by the ERE – CEC on 4 June 1972; the Cova E d'Olopte, of 15 m, with an entrance divided into two galleries that converge; the Cova G d'Olopte, of 13 m, with a narrow gallery in the form of a meander; and the Balma del Vent, of 10x5x4 metres, divided by a rock column.