Eldwythe Sewers

Start-class article · First seen: s15 · Last seen: s16
Eldwythe Sewers
the sewers
Eldwythe Sewers — portrait.
Location
StatusActive
First seens15
Last seens16

The Eldwythe Sewers are the multi-tunnel underground network beneath Eldwythe, used in sessions 15 and 16 as the party’s escape route from the Aurelian occupation. Phil Flowerforge led the surviving party here through a cellar door near the wall (not the main gate) after his smoke-bomb rescue, revealed his old brigand stash and his contact Hett Varn at the White Lantern Shrine, and parted ways at the sewer mid-point with Briochebane. The party then crawled the rest of the sewers themselves, fighting Kuatoa, a needle-blight + flame-skull encounter, two flame-skulls and a ghoul in a sarcophagus chamber, and finally emerging on a skiff at the sewer outflow.

Overview

The Eldwythe Sewers are the campaign’s longest single-arc dungeon-crawl by sheer corridor count, two sessions of damp brick, biogloom, magical puzzle doors, and the dawning awareness that whatever just killed the owl on the ceiling is the most dangerous creature the DM has yet stat-blocked.

Geography and appearance

Multi-tunnel system, accessed via a small cellar door near the wall (not the main gate). Brick walls, biogloom in places (a slightly-diluted Umbrafall strain, per Hugo’s medicine check, [5], sewage water, rusted wheel valves, water pouring through broken gates “like glowing ribbons,” stone platforms half-collapsed into churning blue sludge.

Recorded chambers:

  • Phil’s stash room — a wedged-in-wall crate with healing potions, antitoxin, and a Hat of Disguise (Phil mentioned in [6], found in [7].
  • Kuatoa channel — rusted wheel valves, water-pouring broken gates, stone platform; combat site for four Kuatoa fish-folk with bone-whip lightning weapons and true sight [8].
  • Mossy side room — dead body, backpack pouch with 2 healing potions, 15ft of rope, crowbar, 7gp.
  • Needle-blight chamber — low storage pocket, shelving, floating crates, blue glow gathered in wet strings; combat site for a needle-blight, two rat-swarms, and two flame-skulls [9]+).
  • Long puzzle hallway — iron-banded door with seven locks (each toggling open/closed in a different language; locks 1-3 in Common, others in Halfling, Infernal, Giant, Undercommon). Solution open-closed-open-closed-open-closed-closed [10].
  • Quantum/illusion wall passage — past the puzzle door; inscription “keep your eye on the wall.” Walking backwards into the wall passes through [11].
  • Sarcophagus chamber — five stone sarcophagi, central plinth with chest. Lifting the chest triggers an ambush of two flame-skulls and a ghoul. Loot: 300gp diamond, 10gp/53sp/20cp, an empty-feeling potion bottle (unidentified potion in a bottle that appears empty but feels filled with liquid; do NOT identify as invisibility per DM correction 2026-05-17).
  • Basin chamber — four stone drains, stone basin with overflowing glowing roots; an injured man hides here [12].
  • Sewer outflow — opens to cold night air, salt water, wet reeds, distant smoke. A small skiff bobs against the current. Aurelian patrol at the mouth (party stealthed past).

The sewers also house biogloom cultivation that Hugo identified as the same strain as Umbrafall’s. The typical client is House Tallow-linked buyers (rare potion ingredient). The s16 transcript Whisper-rendered the buyer name as “Talaward”, which is likely a transcript error for House Tallow. Hugo collected ~7 vials and a poison-spore gland [13]. The tieflings-into-Aurelia barrier means the sewers may be a natural smuggling route and a Maelis Dirn remnant operation.

Government / control

No clear governing party. Phil’s brigand-era stash suggests he and his old crew used the sewers; the Kuatoa appear to have a presence. The Aurelian patrol guards only the outer mouth.

Notable features

  • Phil’s stash crate (s15-s16) — Hat of Disguise, smoke bomb, healing potions.
  • The seven-lock puzzle door (s16) — binary-language combination, brute-forced.
  • The quantum wall (s16) — passable backwards only.
  • The sarcophagus trap (s16) — chest-pressure ambush, two flame-skulls and a ghoul.
  • The biogloom cultivation (s16) - same strain as Umbrafall; possible Maelis remnant supplying House Tallow-linked buyers (the s16 transcript Whisper-rendered the buyer name as “Talaward”, likely a transcript error for House Tallow).

History in the campaign

  • Session 15: Phil leads the surviving party in via the cellar door. Reveals his brigand past and his contact Hett Varn at the White Lantern Shrine. Parts ways with Briochebane at the mid-point. Kuatoa ambush. Needle-blight + flame-skull combat. The DM closes initiative at session end.
  • Session 16: Hat of Disguise found and identified. Seven-lock puzzle solved. Quantum wall traversed. Sarcophagus trap survived. Earthwing the owl killed by something unseen on the ceiling [14]. Vazquez and Althea separately encounter an injured man in the basin chamber. Group stealth check past the Aurelian patrol at the outflow. The party finds a skiff and sails south toward the White Lantern Shrine.

Status as of session 16

Open. The unseen ceiling predator that severed Earthwing remains unidentified. The injured man in the basin chamber invisibility-potioned and vanished. The hidden stash he named to the south-and-west [15] is unrecovered. The biogloom cultivation continues.

See also

References

  1. ^ Session 15, line 446-510 — Smoke-bomb rescue; egg stolen; descent to sewer.
  2. ^ Session 15, line 590-700 — Phil's stash and the contact at the White Lantern Shrine.
  3. ^ Session 15, line 826-1313 — Kuatoa combat.
  4. ^ Session 16, line 18-1626 — Hat of Disguise; seven-lock puzzle; quantum wall; sarcophagus ambush; skiff.
  5. ^ Session 16, line 769 — Inline citation.
  6. ^ Session 15, line 693 — Inline citation.
  7. ^ Session 16, line 66 — Inline citation.
  8. ^ Session 15, line 827 — Inline citation.
  9. ^ Session 15, line 1437 — Inline citation.
  10. ^ Session 16, line 995 — Inline citation.
  11. ^ Session 16, line 1224 — Inline citation.
  12. ^ Session 16, line 1130 — Inline citation.
  13. ^ Session 16, line 789 — Inline citation.
  14. ^ Session 16, line 1068-1077 — Inline citation.
  15. ^ Session 16, line 1160 — Inline citation.