Skip to content
CreatePricing

The Sibilant Hollow

The air is heavy with the scent of musk and the sound of scales on stone.

30 roomslairmedium

A humid, multi-layered complex carved into the limestone cliffs, serving as a nest for a rising yuan-ti cult. Flickering green-flame lanterns cast long, dancing shadows across walls etched with serpentine patterns.

The air is stiflingly warm and damp, smelling of ozone and rotting meat. Dim lighting comes from phosphorescent moss and oil lamps filled with emerald oil. Constant low-frequency hissing echoes through the halls.

☠ Threat

S'yrthess, a calculating Yuan-ti Malison, seeks to evolve his followers into more powerful forms through dark alchemy. His presence is felt through the constant patrolling of his pureblood spies and the various traps designed to capture, rather than kill, intruders for his vats. If he is not stopped, he will soon unleash a wave of serpent-hybrids upon the neighboring borderlands.

History

Originally a natural cave system used by lizardfolk shamans, the hollow was seized and expanded by the Malison S'yrthess decades ago. He transformed the primitive caves into a structured lair to facilitate the breeding of serpentine monstrosities and the worship of forbidden reptilian deities. It has recently become a hub for kidnapping local villagers to use as experimental subjects or sacrifices.

Encounter Table

CR
1CR
Yuan-ti Pureblood Patrolx3

Purebloods searching for escapees or intruders.

2CR
Giant Constrictor Snakex1

A hungry serpent patrolling the warm walls.

2CR
Swarm of Poisonous Snakesx1

A seething mass of scales emerging from a wall crack.

Rumours & Whispers

1

Locals say people go missing during the new moon, pulled into the cliffs by snakes.

2

A scholar claims a Yuan-ti Malison is building an army of hybrids in the old caves.

3

A survivor says the air inside the hollow turns to green smoke that rots your lungs.

4

Travelers avoid the area because the very walls are said to hiss at you.

5

There's a secret hoard of gold inside, stolen from the merchant's guild.

Quest Hooks

1
The Missing HeirsRescue

Quest giver: Lord Harken

Two children of a local lord were taken by men in green masks. They were last seen near the hollow entrance.

500 gold pieces and a minor magic item.

2
The Serpent's BlightCure/Hunt

Quest giver: Apothecary Elara

A strange plague is turning people's skin to scales. The source is rumored to be the alchemical vats in the hollow.

Free medical care and a batch of anti-toxins.

Corridor Notes

Corridors between rooms 2 and 6.

Sticky, shed snake skin clinging to the rough limestone walls.

The main hallway connecting Room 11 to Room 17.

Small stone alcoves holding oil lamps that burn with a low green flame.

Near the entrance to Room 24.

Primitive carvings of a multi-headed serpent eating the sun.

Visual sheet

Turn The Sibilant Hollow into a sheet

A high-res, share-ready sheet you can post or print.