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.
Volcanic activity associated with fault lines and crust thinning due to subduction led to the formation of the volcanic zones of Latium and Campania, which extended into the karst-graben mainly on the karst side.