Forbidden Fortress var addthis_config = {"data_track_addressbar":true};

Imperium Portal

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The Forbidden Fortress is the base of the Adeptus Astronomica, incorporating the Chamber of the Astronomican and the Astronomican itself. It is a remote and secret complex on Terra, built within the Himalayan mountain range. To outside appearances the mountains remain unchanged by the hand of man but in fact the Fortress extends deep down into the rock and throughout the entire mountain range. The Chamber of the Astronomican is a massive spherical chamber located within a single mountain, the peak sculpted to form the upper half of the sphere of the Chamber.

Uninvited access to the Fortress is not permitted - even members of the Adeptus Arbites and the Inquisition must seek permission before they can enter.

Sources

• Codex Imperialis, ^{[Needs Citation]}
• White Dwarf 140 (UK) by Jervis Johnson, Andy Jones, Simon Forrest & Rick Priestley, ^{[Needs Citation]}
• Draco (Novel) by Ian Watson, ^{[Needs Citation]}
• Inquisitor (Novel) by Ian Watson