On the northern side of the Galán complex, ignimbrites extend up to away from the caldera and may have reached even larger distances prior to erosion, and they have thicknesses of . The ignimbrites have a total volume of about , with the Real Grande ignimbrite comprising over half of its volume. The volume of the individual ignimbrites increases the younger they are with the initial Blanco and Merihuaca ignimbrites having a volume of about .