Building 7 rooms

SKY SLIME:      PLANT
ASTRAL DRAGON: MONSTER
PSEUDO-SCARAB: VERMIN
MARROW FOLK: HUMANOID
IMAGINARY OGRE: BOSS
FIRE BAT: CRITTER

F
| |
A--B--C
| | | | | |
G--E--D
Room A.
SYGGELOPA the STINKING CHILD looking for girl/boy/personfriend, who they think is being held captive by MARROW FOLKS. Actually came with them willingly to get away from SYGGELOPA the STINKING CHILD, now rethinking it, dungeon life losing sense of mystery and grandeur. Still hates SYGGELOPA the STINKING CHILD though. Is in room C.
Room B.
SOUND: Sound like crunching glass or gnawing teeth. Comes from within walls.
SIGHT: Fetishes of bone and feathers dangle from the ceiling.
Two bridges across enormous bottomless pit. They do not intersect. Easy to go directly across, difficult to turn corners.
Room C.
SOUND: Slow, monotonous weeping. Sounds like it's been going for a very long time.
One of those Ripley's Believe It Or Not rooms where there's a row of mirrors along one wall and once you go around the corridor you can see through them. Couple of MARROW FOLKs behind mirrors making fun of PCs, will flee as they approach. If the PCs linger, HEFOTH the PARANOID SALESMAN will come through on the other side of the mirrors and accidentally reveal something they would kill to keep secret.
Room D.
SIGHT: The roots of an ancient tree emerge from the roof.
SMELL: Spilt beer accumulated over decades.
Crossroads, but one exit just loops back around into the other one. Walls of loop contain shelves for entombed corpses w/ gold coins on their eyes and PSEUDO-SCARAB concealed in their flesh.
Room E.
SMELL: Vomit.
SOUND: Crunch of footsteps on sand.
Two statues. One always tells lies, one always tells the truth. They only know things that statues would know. None of the passages out of this room are trapped or dangerous in any way.
Room F.
SIGHT: Everything is coated in fine layer of snail slime.
Hideout for rebellious MARROW FOLKs, unwilling to recognize authority of IMAGINARY OGRE, want to establish tiny republic in forgotten dungeon crevice.
Room G.
SOUND: Whistling of underworld wind from cracks in wall.
Spiral staircase. Young MARROW FOLKs sliding down bannisters. Will run away if they spot you, bring back angry parents.