Building 10 rooms

PRISMATIC NETTLE: PLANT
LOGIC BEAST: MONSTER
TITANIC MAGGOT: VERMIN
VILE MORLOCK: HUMANOID
ANTI-GIANT: BOSS
WITCH OWL: CRITTER

F--H
| | | |
D--C--J
| | | | | |
I--A--E
| |
B
| |
G
Room A.
SOUND: Chirps of cave crickets.
Couple of VILE MORLOCKs around shallow pit, gambling on combat between trained TITANIC MAGGOT. Intruders will be hurled into pit, but if you wait long enough the furious loser will accuse the winner of cheating and a fight will ensure.
Room B.
SMELL: Rotten-egg brimstone.
Featureless span of corridor w/ pacing ANTI-GIANT 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.
Room C.
ANTI-GIANT chained by leg or eye-stalk to centre of room. Half a dozen scabby VILE MORLOCKs taunting and jeering it.
Room D.
SMELL: Strangely warm, like being in a kiln.
ANTI-GIANT dabbling in painting, composing a still life from scene of TITANIC MAGGOT and bones. Having trouble getting the TITANIC MAGGOT to stay still. Has left a paint canister (turbulent green) in room H, politely promises to kill you unless you go get it right now.
Room E.
High ledge w/ two entrances that looks out over vast lake of lava. One VILE MORLOCK peacefully fishing w/ brass rod, wire, hook. If left alone long enough he will catch something. 50% chance of hungry lava fish, 50% chance of lava treasure.
Room F.
Trash midden. Not planned, just naturally developed here. Infested by tiny well-concealed TITANIC MAGGOT. No treasure, just bits of clothing that might have been magical once but no longer are.
Room G.
Looks like empty room. Actually maw of cave leviathan, those weird stalagmites its teeth. Glimmer of treasure deep in gullet is pyrite lure. WITCH OWLs pick dead flesh from between teeth.
Room H.
Apparent dead end in VILE MORLOCK workshop. Secret door concealed beneath anvil. VILE MORLOCK blacksmith not pleased to see you, will attack with half-forged TRIDENT OF THE ELEMENTS, only continue to forge it if compelled. Possibility that PCs emerge from beneath anvil.
Room I.
TYRLISCO the MUTE PEASANT looking for girl/boy/personfriend, who they think is being held captive by VILE MORLOCKS. Actually came with them willingly to get away from TYRLISCO the MUTE PEASANT, now rethinking it, dungeon life losing sense of mystery and grandeur. Still hates TYRLISCO the MUTE PEASANT though. Is in room D.
Room J.
Bubbling lake of mildly corrosive alkaline goo must be navigated via stepping stones. TITANIC MAGGOT hidden in goo, obviously. Harmless until you get any blood in the goo, then will go into feeding frenzy.