This archive tracks four layers. A record present in 1 of them (IND) is silent in the rest, and says so.
The Horus HeresyM30–M31
[RECORD LOST]
No record for this location in The Horus Heresy.
Age of the ImperiumM32–M40
[RECORD LOST]
No record for this location in Age of the Imperium.
The 41st Millenniumpre-Rift
[RECORD LOST]
No record for this location in The 41st Millennium.
Era Indomituspost-Rift
chaos
Daemon world of Tzeentch, unmade in early M42
A world made entirely of crystal, inside the Maelstrom and in Tzeentch's grip, whose mutant tribes both worshipped and coveted the Ebon Talon and fought each other endlessly around the mountain that held it. Heavily mutated guardians killed everyone who reached the relic's cave. The Talon was what made Kyren's existence possible: lifted out of that cave in early M42, the world began to come apart, and it exploded behind the raiders who took it.
Position
Map frame: 560, 548 in the archive's 0–1000 disk space (core at 500, 500).
Distance from the core: 77 units ≈ 8.2k light years, south-east of the galactic core.
Height above the disk plane: -0.5 units — invented thin-disk jitter, deterministic per record. No published source gives any location a z coordinate.
System: Kyren System
Books set here
1 title in the reading tracker touches this record. Titles link out to the tracker.
Every fact in this record, and where it came from. Editorial derivations say so.
segmentumhigh
wh40k.lexicanum.com/wiki/Kyren infobox Segmentum = Ultima Segmentum, Sector = Maelstrom, both cited to Huron Blackheart: Master of the Maelstrom, chapter 10.
classmedium
wh40k.lexicanum.com/wiki/Kyren 'Kyren was a Daemon World that was made entirely of crystals and it resided within the Maelstrom Warpstorm', with Tzeentch holding it in his grip and mutant tribes living on it. Painted `daemon`, the palette for a warp-held world, on that description rather than on the infobox's own tag stack — the infobox reads 'Dead World, former Daemon World, former Feral World', and copying the first of those would paint this world as the airless cinder it becomes AFTER the only book set on it. The Prospero rule applies: an era gets the state most of its books are set in, and the sole book here spends chapters 10 to 13 on the living crystal world and destroys it in chapter 14. `feral`, the other infobox tag, was refused because that palette paints a verdant primitive world and every physical word canon gives this one is crystal.
gposlow
inferred: the segmentum and the sector are published and nothing finer is. This dataset carries the Maelstrom as a region feature rather than a location (regions.json, centred [568, 552] with a 20-unit radius), so Kyren is placed 8.9 units from that centre — inside the storm canon puts it inside, on a different bearing from New Badab at 4.5 units. No published bearing within the storm exists, and the z is the zPolicy value for this id (compute-z.mjs kyren 560 548).
erashigh
Only `indomitus` is carried. Every statement canon makes about this world comes from one novel set in early M42; nothing dates the crystal world, the tribes or Tzeentch's grip to M41 or earlier, so no earlier era is claimed. The record's baseline class still draws it as what it was in any era a reader browses.
no-system-surveyhigh
No `systems/kyren.json`: canon names no star, no sibling body and no system for this world — the infobox's System field is empty — and the world does not survive its one book. The synthesiser draws it from this record instead, which is the honest outcome.