A detached Hellstorm Cannon from a long-destroyed Emperor Titan can be seen lying on its side near the city of Ironworks Bay on the planet Kronus, a monument to a Titan that fell during the Horus Heresy, the possession of which later became a strategic objective for all of the factions involved in the Dark Crusade. A trench large enough to move an armoured company through had been carved out of the earth in front of the cannon from its final firing during the Heresy.