The Hollow Abyss

An oppressive silence hangs over the Hollow Abyss, broken by the faint, almost imperceptible tremor of silk strands vibrating in the stale air. The walls, floor, and ceiling are draped in layers of webbing; some brittle and grey with age, others fresh and glistening, still tacky to the touch. The scent is a mix of damp stone, old dust, and the faintly sweet, cloying odor of spider venom. Every step risks alerting something that has been watching for far longer than you’ve been here.

Webbed Fissure
The entrance to the Abyss is a yawning defile in the stone face of the mountain. The depths of the entry are shrouded in darkness, concealed behind a wall of giant spider webs. A lattice of thick, rope-like spider silk spans the gap, trembling ever so slightly as if something unseen is moving far below. The strands are anchored to jagged rock on either side, their tension humming faintly when touched. A torn scrap of cloth, snagged on a strand of the web, matches the heraldry of House Cavrett, a local noble family.

Egg Chamber
A low, wide cavern, its walls and ceiling thick with layered webs. Pale, bulbous egg sacs cling to every surface, some the size of a fist, others as large as a human head. The air is warm and humid here, carrying a faint, rotten sweetness. Three humanoid shapes hang cocooned in the webs. Two are long dead, their faces frozen in silent screams beneath the silk; the final one is a local farmer who got too close to the Abyss and is still faintly twitching. One of the bodies has a silver amulet with a spider motif, the key to the door of the Alchemist’s Retreat.

The Recluse Den
A webbed-over entrance leads down to this chamber, lit by a faint, phosphorescent glow from lichen-covered walls. At its center rests the Recluse — a massive, ancient spider with mottled grey fur and eyes like pools of black glass. It does not attack immediately; instead, it speaks in a voice like dry leaves scraping stone, offering cryptic warnings and oracular visions. But it attempts to use these to manipulate visitors to working towards its own ends. The Den is eerily quiet, save for the slow, deliberate clicking of the Recluse’s mandibles. The webs here are old and brittle, layered over centuries.

Abandoned Camp
This chamber bears the remnants of a once-orderly campsite: bedrolls, a cold firepit, scattered supplies. The dust here is disturbed only by the faint drag marks of something heavy being pulled towards the Recluse Den. The silence is oppressive, and the smell of decay lingers faintly. A half-written journal lies open, its ink smeared by something wet; the last entry ending mid-sentence. The door to the north is made of iron and is sealed with a silver magical lock that uses the amulet from the Egg Chamber to open.

Alchemist’s Retreat
The final chamber is a stark contrast to the rest of the Abyss. Shelves of dusty glassware, stoppered vials, and stacks of parchment line the walls. A faint chemical tang hangs in the air. Without the amulet to unlock the door, access is via the claustrophobic passage from the Recluse Den. Within are alchemical notes detailing the creation of the spider mutants; experiments gone awry, using waste from failed transmutations. There is also old spider venom antidote, and a map to another of the alchemist’s lairs.

The 1200 dpi versions of the map were drawn at a scale of 300 pixels per square and are 7,200 x 10,200 pixels (24 x 34 squares). To use this with a VTT you would need to resize the squares to either 70 pixels (for 5′ squares) or 140 pixels (for 10′ squares) – so resizing it to either 1,680 x 2,380 or 3,360 x 4,760, respectively.

https://dysonlogos.blog/2025/09/16/the-hollow-abyss/