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This page contains spoilers for: Dead in the Water (Audio Drama)

Map Basic Data Planetary Image
px Name: Archipelaga px
Segmentum: Ultima Segmentum
Affiliation: Imperium
Class: Feral World, Ocean World
Tithe Grade:

Archipelaga is a Feral Ocean World, the landmass of which is broken up into innumerable islands of varying size.[1a]


The planet was a human colony, likely reclaimed by the Imperium during the Great Crusade, and subsequently lost during the Horus Heresy. The planet all but disappeared from Imperial records after the Heresy, but later evidence proved that the inhabitants had turned to worship Chaos and raised several temples to Nurgle.[1b]

The Imperium re-discovered the world in the wake of the Damocles Gulf Crusade, and set about reclaiming it. The campaign to do so was prolonged, but not especially difficult, since the native humans had no high technology (crossbows and gunpowder representing the "state of the art").[1a]

However, this changed when a squad of Vostroyan Imperial Guardsmen stumbled onto one of the Nurglite temples and were possessed by Chaos. They went on a destructive rampage throughout the islands, killing both rebels and Imperial loyalists alike[1a]. Eventually, a party led by Commissar Ciaphas Cain tracked the rogues back to their temple and annihilated both by calling in an air strike[1c]. Thereafter, the Guard forces had to proceed with greater caution, on the lookout for possible corruption of other units, and making sure to destroy any remaining Chaos shrines.[1b]

See also