Region · Marsh Province · Iron Pact Territory
Threlmoor
Fog-wrapped marshes, peat-rich lowlands, and towns that do their best to look unremarkable. The Iron Pact patrols every causeway. Beneath the surface: arenas, sunken oaths, and things that do not advertise.
The Mire Towns
Threlmoor’s towns have the same surface character: stone buildings, low rooflines, peat smoke in the evening, and a general air of communities that have decided the best response to scrutiny is not to invite it. Visitors are received correctly, fed adequately, and answered literally. Nobody volunteers information. Nobody refuses to answer. The resulting conversations take longer than they should and contain less than they appear to.
Every surface town in Threlmoor maintains an informal relationship with what happens beneath it. This relationship is not acknowledged in any official document, Accord survey, or Iron Pact chapelry record. It is, however, reflected in the towns’ unusual stability: no significant crime, no unsanctioned violence, no disputes that go unresolved. The Order of the Last Lantern maintains a watching post in most towns and has never explained how it knows what it knows. The towns have never asked.
The Gilded Chain operates openly in Threlmoor’s towns as merchants, debt collectors, and occasional intermediaries. Their relationship with the Iron Pact is technically competitive and practically cooperative: the Pact provides security, the Chain provides liquidity, and the towns provide the kind of discrete silence that allows both to function. Visitors who come to Threlmoor for Gilded Chain business are advised to conduct it through the established intermediaries and not to improvise. The towns have seen what improvisation produces and are not interested in hosting more of it.
“The marsh is honest. It tells you exactly what it is. The towns learned from it.”Threlmoor local saying
Iron Pact Chapels
The Iron Pact has placed a chapel on every significant elevation in Threlmoor: not for spiritual geography but for sightlines. Each chapel is staffed by a minimum of two Pact members and maintains a signal-lantern that communicates with the adjacent chapels in a chain that can relay a warning across the entire region in under twenty minutes. The network has been operational for forty years. It has triggered a full-region alert seven times. Five of those alerts resulted in Pact response. The other two resulted in the Pact standing down before it reached the site. They have not explained why.
Iron Pact doctrine in Threlmoor is enforced with more consistency than in most other regions, which the Pact attributes to the density of its chapel network and which outside observers attribute to the Pact having decided that Threlmoor specifically requires it. Their public position is that the marsh hides things. Their private position, which leaks occasionally into briefings, is that some of what the marsh hides is older than the Pact and does not share its values. They have not disclosed the list of things they are specifically watching for.
Ost commands the regional chapel network from the central chapelry outside the largest mire town, a position she has held for eight years. She is considered the most effective regional commander the Pact has placed in Threlmoor since the network was established, which is a category that has had significant turnover. Her predecessors left on schedule, on medical grounds, or did not leave. Ost has declined to discuss her predecessors. She has extended her posting twice and is visibly not done.
“We do not patrol the causeways because we distrust the locals. We patrol them because something in the marsh does.”Iron Pact, Threlmoor regional briefing
The Causeways
Threlmoor’s causeways are its circulatory system: stone roads raised above the bog on ancient foundations that nobody has been able to fully survey because the bog does not allow it. They connect the mire towns, the chapel hills, and the points of entry where the marshland becomes passable ground. Leaving a causeway without a guide licensed by the towns is not illegal in Threlmoor. It is simply considered equivalent to a formal statement that you do not intend to return.
The Gilded Chain operates toll assessment posts at five causeway junctions: charging passage fees that are technically voluntary contributions to road maintenance under a provision that the Accord survey described as “locally established custom.” The Iron Pact does not dispute the posts. The town councils do not dispute the posts. The fees are considered reasonable given the causeways’ condition, and the Chain’s maintenance records are impeccable. What the Chain collects beyond the toll — information, favours, debt acknowledgements — is not listed on the maintenance record.
Threlmoor fog has a quality that visitors describe as directional: it seems to come from specific points rather than settling uniformly. Locals navigate it without difficulty and will not explain how. The Iron Pact patrol schedule is adjusted for fog events in ways that are documented as weather contingency but which experienced observers note are specifically timed to certain causeway sections. The sections in question are not the oldest parts of the causeway system. They are, however, the sections that sit above the deepest peat.
“Stay on the causeway. That isn’t a warning. It’s an explanation of what the alternative is.”Threlmoor causeway toll post notice
The Peat Depths
Beneath Threlmoor’s peat layer is a system of root-galleries: passages formed by the slow collapse and compression of ancient vegetation that have, over centuries, produced navigable tunnels several feet across. They connect points that the causeway system does not, and they are used by people who have reason not to use the causeways. The towns know about the root-galleries. The Iron Pact knows about the root-galleries. The Order of the Last Lantern has mapped approximately sixty percent of them. Nobody has shared this map with anyone else.
Somewhere in the Peat Depths is an underground arena where debts that the law will not recognise are settled by contest. Entry requires an introduction from someone already known to the arena’s operators, which means entry requires knowing someone who has already been there, which means the arena’s existence has been an open secret for a very long time while remaining operationally secure. The contests are not always to the death. They are always to a conclusion that all parties accept. The Gilded Chain provides the introductions. The Iron Pact has declined to confirm whether it knows the arena’s location.
The Peat Depths preserve. Oaths spoken underground in Threlmoor are considered binding in a way that surface oaths are not, by a custom that predates the Accord and has not been tested in Accord law because nobody involved has ever brought a case. The Order of the Last Lantern considers sunken oaths to be outside its jurisdiction and inside its concern. It has been monitoring the practice for twenty years. It has intervened once. The nature of that intervention is classified within the Order’s Threlmoor records.
“What you say underground stays underground. That is not a comfort. It is a mechanism.”Order of the Last Lantern, Threlmoor field notes
The Mine Shafts
Threlmoor’s primary industry is peat extraction: fuel, building material, and the chemical precursors used in several Pestraval research processes. The mine shafts are deep, narrow, and staffed by workers who are paid well and ask few questions about what they occasionally find in the cutting face. Items found in the cutting face are reported to the site operator, who reports them to the Gilded Chain, who files the reports in a ledger that the Iron Pact has requested access to twice and been denied both times on commercial confidentiality grounds.
Three miners descended a peat shaft two weeks ago and have not come up. The shaft is sealed at the surface. It is sending signals: a repeating vibration through the shaft walls that the surface crew has been recording because nobody has told them to stop. The signals follow a pattern that no one on the surface crew can interpret, but which the Order of the Last Lantern’s field representative recognised and immediately filed under a classification that required her to leave the site and report in person. She has not returned to the site. The shaft is still sending.
“Three men went down. The shaft’s been talking ever since. Those are two separate facts and we are choosing not to connect them until we have more information.”Iron Pact Threlmoor incident report, current period