Also in this time volcanic activity associated with the faults and the weakening of the crust over the subduction created the volcanic zones of Latium and Campania, which intruded into the karst-graben, mainly on the karst side.
The volcanic zones of Latium and Campania were formed due to volcanic activity linked to faults and crust weakening caused by subduction, which intruded into the karst-graben primarily on the karst side.