In the final element of the Dungeon of Terror series we have a series of natural caverns that predate even the dwarves who originally colonised the underground complex and made it their own. They never really caught the interest of the Mad Mage, Infidus the Black, who took over after the dwarves left (or were chased out by him, nobody knows for sure), but do provide homes for other beings... currently a band of gnomes, a few sea trolls and others live there. The notes suggest how they get along and what they are doing but are, perforce, quite sketchy. You will have to add more detail (and game statistics) before the party arrives.
There are eleven chambers in all in this area, which is at the south-east corner of the complex. Only a couple show much evidence of construction work, the rest are natural. There's an overview map showing this area with reference to the rest of the complex as well as individual miniatures-scale tiles to enable you to lay it out before your players. With their usual mastery of PDF technology, 0one Games enable you - via their Rule the Dungeon button - to customise various elements of the tiles before printing: square, hex or no grid, whether or not you want furniture or doors and so on.
Another nicely-thought-out area, there's plenty of scope for some interesting encounters whether you use this as part of the Dungeon of Terror or as a stand-alone set of caves.Rating: [4 of 5 Stars!]