The Pietra di Bismantova (literally Stone of Bismantova) is a geological formation (monadnock or inselberg) in the Reggiano Apennines, in the comune of Castelnovo ne' Monti, province of Reggio Emilia, Northern Italy, c. from Reggio Emilia. It has the shape of a narrow, quasi-cylindrical plateau (measuring 1 km x 240 m) whose steep walls rise as an isolated spur from the nearby hills. The top has an elevation of above sea level. It is included in the National Park of the Appennino Tosco-Emiliano.
The spur is composed of yellowish calcarenite over a marl basement, all formed in the Miocene as a sea bottom. It includes fossils belonging to a tropical environment. It is surrounded by woods, mostly of hazel trees (Corylus avellana).
The Pietra di Bismantova is mentioned by Dante Alighieri in his Divine Comedy (Purgatory, IV, 25-30).
The Pietra di Bismantova is the subject of a documentary film titled La Montagna Magica Il mistero di Bismantova (The Magic Mountain: The Mystery of Bismantova), directed by Reggio Emilia-based filmmaker Massimo Dallaglio, with a screenplay by Francesco Gerardi.
See also Inselberg
References
External links Page at Emilia-Romagna region nature website