Building 10 rooms
BRASS DRAGON: MONSTER
PIRATE SNAIL: VERMIN
CARRION ORC: HUMANOID
BLUE CYCLOPS: BOSS
LOBE BOA: CRITTER
SOUND: Almost-subsonic warble of cave songbirds.
Site of ancient battle. Hundreds of skeletons, rusted armour, shattered helms. Single, functioning DIRK OF THE LICH somewhere in mess, but searching for it likely to disturb spirits of the dead.
Seems like straight corridor. Really obvious secret doors spaced out at five-metre intervals along corridor - loose bricks, bookshelves w/ books sticking out, candlesticks on funny angles, etc. All just spray acid except one.
SIGHT: Dust on every flat surface.
Featureless span of corridor w/ pacing BLUE CYCLOPS in bleak, contemplative mood, searching for reason even to live. Not aggressive until given one - then will immediately turn on PCs. Will come up w/ one on own in half hour or so.
SMELL: Humans being cooked. Indistinguishable from roast pork except to trained noses.
SOUND: Whistling of underworld wind from cracks in wall.
FENDUNTO the OLD PRIEST, pacing. Could swear there was a secret door somewhere along this otherwise featureless corridor (there isn't).
Trash midden. Not planned, just naturally developed here. Infested by tiny well-concealed PIRATE SNAIL. No treasure, just bits of clothing that might have been magical once but no longer are.
Enormous mirror is scrying-portal to alternate realms. BLUE CYCLOPS getting stern lecture from overboss in Plane of Chaos/other, better dungeon/Hell, will shortly emerge in extremely foul mood. If there is a mirror anywhere else in the dungeon this mirror will let you look out of it.
SMELL: Air disgustingly humid.
Bedchamber of three, four CARRION ORCs. Sodden and filthy. Careful inspection of damp rags that serve as bedding will reveal a(n) DECK OF FIRE in surprisingly good condition, but forces save against filth fever.
SIGHT: Cobwebs in every corner.
CARRION ORC games room. Mildewed cardboard boxes, rotting tomes with amusing titles like Ye Olde Playeres Handbooke. Spotty CARRION ORCS hunched over reasonably flat rock playing Humans and Hamlets with dice made of bone and precious stones. One of the dice is actually lucky.
Lightless oubliette. HYLDOTH the EXHAUSTED CHILD has been trapped in here for at least twenty years, some CARRION ORCs coming by to feed and water them occasionally.
SIGHT: Room is part of ancient mansion, walls are rotting wood.
SOUND: Hiss of steam escaping through cracks in floor.
Bunch of CARRION ORCs who were just pointlessly fucking sitting there waiting for something to walk in so they could attack it.