Revenge of the Runelords 2 of 3: Crypt of Runes

With one imminent apocalypse prevented, the heroes can finally focus on directly opposing the machinations of Runelord Xanderghul, whose pursuit of revenge continues to threaten the Saga Lands—and Golarion as a whole! But to reach him and force that confrontation, the heroes must risk it all in conjuring a personification of doomsday known as the Oliphant, for this titanic legend is their only pathway into the deadly realm where Xanderghul awaits: the Apocalypse Archive of Jandelay!