Changes

The prison was a large and hulking annex annexe in the skirts of the [[Imperial Palace|Palace]]'s [[Tower of Hegemon]], and its walls were laced with [[Cadia|Cadian]]-mined [[Noctilith]]. During the [[Battle for Terra]], most of the Imperium's prisoners were taken from other penitentiaries and were sent to be housed within Blackstone. The exact reasons for this, are unclear , and even its '''Warden of the Watch''', [[Vaskale Solar]], did not know why this occurred. Regardless of the reason, its inmates' captivity was ensured. Blackstone was built as robustly as any of the [[Primarch]] [[Dorn]]'s fortifications and only the Palace's [[Imperial Dungeon]], was a more secure place of imprisonment.{{Fn|1b}}