Chamber of the Astronomican
The Chamber of the Astronomican is part of the Terran Forbidden Fortress. The Chamber is a massive sphere, located at a peak of the Himalazian mountains. The lower half of the sphere is carved into the mountain, the upper half visible as a giant dome. Its entire inner surface is covered with ten thousand seats, with each seat facing the centre, where a ball of psychic energy dances in the air. The ball is created by the Chosen as they release their powers to the Astronomican. This power is then directed by the mind of the Emperor as a "psychic light," reaching across light years of space. Hundreds of the Chosen die every month fueling the Astronomican, their places taken by new psykers.