This archive tracks four layers. A record present in 4 of them (HH, AoI, M41, IND) is silent in the rest, and says so.
The Horus HeresyM30–M31
imperium
Homeworld of Horus and the XVI Legion
A world mined hollow long before the Imperium found it, its surface given over to gang wars fought in the shafts. The Emperor took the Luna Wolves' first recruits from those gangs, and Horus was raised in them.
Age of the ImperiumM32–M40
none
Destroyed
Nothing survives. Published accounts disagree on who ended it and when, but every account agrees it did not outlast the Heresy by long.
The 41st Millenniumpre-Rift
none
[RECORD LOST]
[RECORD LOST]
Imperial records of the Warmaster's homeworld were struck out with the rest of his name. The destruction stated in the previous era is carried forward because nothing published undoes it.
Era Indomituspost-Rift
none
[RECORD LOST]
Ten thousand years of a name nobody is permitted to say, over a coordinate with nothing at it. The Black Legion recruits from anywhere it likes and has never needed a homeworld.
Position
Map frame: 268, 546 in the archive's 0–1000 disk space (core at 500, 500).
Distance from the core: 237 units ≈ 25.2k light years, west of the galactic core.
Height above the disk plane: -3.1 units — invented thin-disk jitter, deterministic per record. No published source gives any location a z coordinate.
System: Cthonia System
Books set here
1 title in the reading tracker touches this record. Titles link out to the tracker.
wh40k.lexicanum.com/wiki/Cthonia infobox Class = 'Destroyed, former Adeptus Astartes Homeworld / Feral World / Mining World'. The Destroyed half is this record's aoi and m41 status; the baseline is the living world. It is rendered hive rather than feral deliberately: the palette set's `feral` is dense jungle, and Cthonia is the opposite of that — mined hollow to the mantle, its surface a worked-out industrial shell with the gangs fighting in the shafts under it. 'Feral World' in the infobox describes how its people lived, not what the planet looked like
gposlow
derived: Segmentum Solar and repeatedly described as one of the nearest Legion homeworlds to Terra. Placed a short hop coreward-east of Terra. No published bearing exists
systemIdhigh
[RECORD LOST] — the Lexicanum infobox System field is empty
era-indomitushigh
this entry exists to close a rendering gap, not because a new source appeared. app/src/stages/system.js draws a planet in every era whether or not its record carries that era, and derives a destroyed world's grey from eras[era].status — so an era key the record does not carry falls back to the survey class and the world comes back to life in it. With the baseline moved to this world's LIVING appearance, a missing indomitus key would have done exactly that. The status carries forward what the preceding era already states, on the same source; nothing new is claimed
era-m41-statushigh
the m41 status was '[RECORD LOST]' alone. With the baseline moved off `dead` that became a resurrection: the renderer derives grey from the aoi status 'Destroyed', finds nothing to derive from in m41, and falls back to the living baseline — so the Warmaster's homeworld quietly rebuilt itself in the fourth millennium because the record got thinner. The status now carries the destruction forward explicitly and the [RECORD LOST] marks the part that genuinely is lost, which is everything after it