Before revision: The staircase, in Piperno, to the mezzanine floor of Villa Meola in Portici Piperno in Church of San Francesco delle Monache, Naples Piperno is a magmatic rock present in areas where there has been volcanic activity.
After revision: The staircase, in PipernoDomenico Calcaterra et al., Piperno from Campi Flegrei: A relevant stone in the historical and monumental heritage of Naples (Italy), February 2005 Environmental Geology 47(3):341-352 DOI: 10.1007/s00254-004-1156-3 URL, to the mezzanine floor of Villa Meola in Portici Piperno in Church of San Francesco delle Monache, Naples Piperno is a magmatic rock present in areas where there has been volcanic activity.