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Grimy, mossy dungeon. Mass Grave · Medium · Medium

The Squelching Maw

Roots feed on the marrow of the nameless dead.
Rooms
7
Foes
12, CR 1/4 to 5
Traps
3
Treasure
4,450 gp
1234567Entrance
Select a room on the plan to open it.

The party is in

1. The Drowning Vestibule

Seen

Something wanders by

At a glance

The threat

The Rotting Blight-Heart, a sentient, necro-fungal entity that has puppeteered the remains of the dead.

Wandering monsters (1d3)

  1. 1

    GrickCR 2

    When: Every 20 minutes of real time or loud noises.A worm-like scavenger with four tentacles and a hard beak, perfectly camouflaged against the stone.
  2. 2

    2 swarms× Swarm of Blight-RatsCR 1/4

    When: Opening a door or container.Rats with mushroom caps growing out of their heads, driven by a hive-mind hunger.
  3. 3

    Gray OozeCR 1/2

    When: Entering a flooded corridor.A liquid-like predator that looks identical to a puddle of dirty water.

Rooms

7
1

The Drowning Vestibule

1 trapsecret

What they see

Read aloud

Stone steps lead down into a chamber where stagnant, waist-deep water laps against the mossy walls. The heavy smell of silt and stagnant decay fills the lungs.

Features

  • Submerged iron portcullis
  • Slick stone stairs
  • Hidden drainage grates

What the GM knows

Traps

The Rising SluiceDC 14 bludgeoning

Stepping on a pressure plate near the exit drops the entrance portcullis and opens water valves to flood the room rapidly.Disarm. A hidden lever behind a loose stone near the ceiling can reverse the flow and lift the gate.
Room secrets · GM only

Notes

Entrance point. Set the tone of dampness and danger immediately.

5 doors: W (normal), E (normal), S (secret), N (secret), W (locked)

The place

What it is

A subterranean complex of moss-slick stone and crumbling gothic arches where the city once dumped its plague victims.

Atmosphere

Constant dripping of brackish water from the ceiling, walls covered in slick, bioluminescent moss, and the rhythmic squelching of shifting piles of bone.

The threat

The Rotting Blight-Heart, a sentient, necro-fungal entity that has puppeteered the remains of the dead.

History

Originally a sanctified crypt for a forgotten sect, the Maw was converted into a mass grave during the Great Blight.

Rumors

1d4
Roll a rumor

  1. 1The water in the town's east well has started tasting like wet earth and iron.
  2. 2Beggars living in the old tunnels have gone missing, leaving only mossy footprints behind.
  3. 3A local herbalist is offering gold for any 'glowing emerald fungus' found in the depths.
  4. 4Strange, squelching noises can be heard beneath the cathedral floors during midnight prayer.

Plot hooks

2
InvestigationThe Missing ApothecaryMaster Elwyn went into the tunnels to find rare mold and hasn't returned. His daughter fears the worst.From: Lydia ElwynReward: Selection of potions and 200 gp
HeroicPurify the SourceThe city's water supply is being corrupted by a fungal growth from the old mass graves. It must be destroyed.From: Captain of the WatchReward: A writ of passage and a pouch of gemstones

Corridors

2

  • Corridors between and

    Large, bulbous roots hanging from the ceiling like stalactites, dripping a sticky, translucent sap.

  • Main junction near

    A trail of rusted iron shavings and small bone fragments leading toward the Sanctum.

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