During all their prehistoric life it has had an activity to a large extent of the lávico type, nevertheless great part of the volcanic building is covered with layers of ashes and variable mud flows of thickness that form fertile grounds of the zone.
Durante toda su vida prehistórica ha tenido una actividad en su mayor parte del tipo lávico, sin embargo gran parte del edificio volcánico está cubierto de capas de cenizas y flujos de barro de espesor variable que forman los fértiles suelos de la zona.