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!

Into the Apocalypse Archive is a Pathfinder Second Edition adventure for four 18th-level mythic characters. This adventure concludes the Revenge of the Runelords Adventure Path, a three-part campaign in which a group of adventurers fight against the evil plans of Runelord Xanderghul-the most powerful of all runelords. This adventure also includes rules for large-scale apocalyptic disasters and presents a range of legendary artifacts and monsters to reward and challenge high-level characters.

Each full-color softcover Pathfinder Adventure Path volume contains an in-depth adventure scenario, stats for several new monsters, and support articles meant to give Game Masters additional material to expand their campaign. Pathfinder Adventure Path volumes use the Open RPG Creative License and work with the remastered Pathfinder Second Edition and compatible roleplaying games.