An old, forgotten study tucked away in the corner of a Fortress
Small dungeon in an open cavern
Catacombs surface entrance
The Catacombs Floor B1
Spider Caves nesting room
Improved vanilla dungeons
Note that Small Nether Dungeons are an opt-in feature. They must be manually enabled in the mod's config.
The Catacombs Floor 0
Fortress of the Undead