Mortifactors - Fortress-Monastery: The Basilica Mortis is a massive Imperial space station in orbit of Posul and serves as the fortress-monastery of the Mortifactors. The halls of the Mortifactors' massive orbiting fortress-monastery are lined with the skulls and bodies of their dead, and its chapel with the skulls of the Chapter's enemies.The ancestral home of the Mortifactors Chapter rotates slowly in the wan light of Posul and its distant sun. For nearly 10,000 Terran years, since the Mortifactors' first master, Sasebo Tezuka, led their Chapter to claim dark Posul as the Chapter's homeworld through the guidance of the Emperor's Tarot, the Mortifactors have stood sentinel over the night world of Posul.These grim knights of the Imperium have trained members of their warrior order within the walls of their orbiting fortress-monastery since that time. In appearance, it resembles some vast mountain range cast adrift in the void of space.The Adeptus Mechanicus' finest Tech-priests and adepts had come together to create this orbiting bastion of Imperial power: the Basilica Mortis was a marvel of arcane technical engineering that has long since been forgotten in the Imperium.When it is fully occupied, the Basilica Mortis is home to the 1,000 battle-brothers of the Chapter and all their officers, with a supporting staff of Chapter servitors and Chapter serfs, including scribes, technomats and functionaries that number a further 7,500 souls.Vast orbital spacedocks jut from the prow of this adamantium mountain, spearing into space with slender silver docking rings rising from the jib. At any given time, heavily-armed Mortifactors strike cruisers are berthed in the docks, with smaller, Gladius-class Frigates and Hunter-class Destroyers either returning or departing on patrol throughout the Mortifactors' domain.The Chapter's battle barges, devastating warships of phenomenal power, are housed in armoured bays deep in the bowels of the fortress-monastery, terrible weapons of planetary destruction secured within their silent hulls.Within the Mortifactors' fortress-monastery, the gently arched walls are smooth and sparsely ornamented. Here and there along their length, tiny niches are lit by delicate, diffuse lights, which hold stasis-sealed vessels containing some of the Chapter's holiest relics.The halls of the Basilica Mortis are always gloomy and silent as a tomb. Every portal or chamber a visitor passes is adorned with more skulls and only upon closer inspection does one realise that none of them are carved or fashioned by human hand. All are real, bleached human skulls made dusty with age.Though visitors will see no inhabitants of the fortress-monastery during their tour, the silence is broken by occasional snatches of hymnal dirges and somber chants of remembrance that come from the Astartes' monastic cells. From the main docking tunnel, seated statues run along its length though these forms are not actually statues carved from the living stone of the Basilica, but preserved human corpses.But these are no ordinary corpses. Like the skulls, these seated figures are the preserved bodies of fallen battle-brothers who died in glorious combat, and now reside at the feast table of the Ultimate Warrior.The monastery's main chapel is similarly filled, but with the skulls of the Chapter's many foes claimed in the aftermath of victory upon a thousand battlefields.