The Rock - Reconstruction: The only thing that remained of the Dark Angels' former homeworld was a large chunk of stone the size of a large asteroid. The huge fortress-monastery where the Lion and Luther had fought survived the conflagration, protected by gravitic force field emitters of awesome power. The monastery of Angelicasta and the huge fragment of Caliban's bedrock had held together when the rest of the planet had shattered. This was all that was left of the Dark Angels' once proud and magnificent homeworld.The Dark Angels flew down to the surface of the planet that had survived the Warp storm and gazed about them in horror at what was left of their verdant homeworld. The great fortress of Aldurukh had been razed to the ground. At the heart of the ruined wasteland they discovered a mentally shattered Luther, bloody, cringing and gibbering, but they were unable to extract anything coherent out of the shell of the man who had once been the former second-in-command of the I Legion and El'Jonson's closest friend.Luther repeated the same words over and over again: the primarch had been carried away by the Watchers in the Dark and one day he would return to forgive Luther for the terrible sins he had committed. Of the mighty primarch, Lion El'Jonson, there was no sign.Following the destruction of Caliban, the Dark Angels made The Rock their new home. Never was there a gloomier sight, for although the Warp storm that scoured Caliban could not penetrate the ancient protective energy shields, they left an indelible mark. The force field over the ancient fortress-monastery held, but was rent with cracks.To this day, there exists a disturbance within the field's protective shell, as if part of that ancient tempest still rages within. Great chain-lightnings arc across the artificial atmosphere that surrounds the craggy Rock, briefly outlining the ruins that crown the asteroid. The Dark Angels explored the halls and dungeons they found beneath the fortress-monastery. There, they claimed the hoard of machinery that had sat untouched since the little-understood Age of Technology.Many of the devices from that apex of Human invention still worked, like the great void shield generator itself, although their mechanisms were now unfathomable. Although the remaining halls were large, a massive labour carved out deeper and deeper catacombs beneath the asteroid's bedrock, excavating room for an entire Space Marine Legion. With the aid of the Tech-priests of Mars, spacedocks were added, allowing for the entrance of voidcraft.Although it took many standard centuries to complete, The Rock was also outfitted with a great Warp-Drive, allowing the Dark Angels' headquarters to travel across the galaxy. The Rock itself does not stay in any one star system for long; at most, it remains in place only for a few generations of mortals. The Chapter gathers recruits from each settled human world at which The Rock pauses.While the artisans did marvellous work, crafting halls full of clustered columns rising to arched vaults, and much-decorated ceremonial crypts to hold the sacred items of the I Legion and its successors, it was a grim place, full of echoes and cold stone. The Dark Angels' mobile fortress-monastery is now known officially as the Angelicasta (the "Tower of Angels") but is commonly referred to as "The Rock" just like its ancient predecessor Aldurukh.