 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 .