Prince of Demons (Patreon)

Dungeon Magazine #150 revealed the final chapter in the Savage Tide adventure path. The party is forced to contend with Demogorgon on his home turf, the Gaping Maw of the Abyss. There are several large area battles as well as the one between the PCs and Demogorgon himself. Part of this map series is a re-design of Gaping Maw to add detail and for the DM to be able to use it to plan an overland invasion. Other areas are a beach assault, the use of bunkers (which are included as two PNG transparent tokens for use in any campaign). It's the Abyss, it's not just for demons anymore.

High resolution, player, DM, gridded and non-gridded maps for this series are on this supporter post: https://www.patreon.com/posts/prince-of-demons-118839254