Dungeon is one of the 6 Terrain types.
Terrain Flavor Text[]
Your surroundings are drab. Grey stone walls, grey stone floor, grey stone dust on every surface. Each time you inhale, it tickles your nose, but you fight hard not to sneeze: there are a myriad of footprints outlined on the floor and you'd rather not alert them to your presence. Gripping your weapon tightly, you shrug. A dungeon isn't the most glamorous of settings, but a hero has to go where the monsters are.
As you turn to go, you catch sight of a note stuck to the wall: