Vorsk Subsector

The Vorsk Sub-sector is a Segmentum Obscurus cube ravaged by Waaagh! Gragnatz, and on this map the neighbourhood of Castellax, the Iron Warriors fortress-world Warsmith Andraaz tithed to Medrengard until Waaagh! Biglug and a slave revolt killed him.

Gemin Prime, Absteron, Scythia, and the Wyrm's Maw share the chart. Castellax is a Medrengard tithe-world, not an Isstvan pin.

The Vorsk Sub-sector still matters as that dual Ork-and-Iron-Warriors wound. Unofficial maps keep the vorsk-sector parent and leave Castellax a direct child of this row.