I’ve been playing Tony Dowler’s “How to Host a Dungeon” the last few nights, and realized it would be interesting to record my results for each Age in terms of a potential campaign setting, beginning with the Primordial.
I rolled a river with multiple waterfalls, some mithril deposits, ancient beasts near to the surface, and a demon civilization deep under the earth–which lasted only one season before erupting upwards without interacting with anything else. At the end of the Age, earthquakes caused multiple rifts intersecting the river.
Then I spent some time thinking about what all that meant for the developing dungeon, eventually moving away from the idea I was just developing a single dungeon here. At least in this portion. This felt more like a chance for world creation.