Belial IV

Belial IV is a Crone World in the Eye, one of the old Eldar homeworlds pulled into the Warp when Slaanesh was born. This map keeps it under the Belial IV System rather than dumping the pin into a generic Obscurus fog.

The Temple-Palace of Asuryan, scattered waystones, and later a Word Bearers Black Cathedral all used the same haunted cities. Ynnari blades, Abyssal Crusade captives, and Altansar's return stories all pass through this crust. It is not Dark Angel Master Belial and not a Caliban sister rock.

Belial IV still matters as a named Crone World with a system of its own. Unofficial fan summaries keep the belial-iv-system parent and do not treat the pin as a Dark Angels namesake or as Fabius Bile's Urum.