Magmatic Jointing in riolites in Lentia Mountains. The cliff is due to the formation of La Fossa Caldera (this is the outer ring of the caldera). Photo ID 649
Magmatic Jointing in riolites in Lentia Mountains. The cliff is due to the formation of La Fossa Caldera (this is the outer ring of the caldera). Photo ID 649
Photograph: S. Papeschi