Altansar

Altansar was a small Eldar Craftworld that survived the Fall of the Eldar. Altansar is also known as the sister Craftworld of Ulthwe, due to its close proximity to the Eye of Terror.

History
Seeing the fate that would consume the Eldar race, many farsighted Eldar created Craftworlds to escape the Fall and the creation of Slaanesh. Though many of these Craftworlds were destroyed by the psychic shockwave of Slaanesh's birth a few survived. Altansar was one of these Craftworlds, but was unfortunately caught in the Eye of Terrors gravity well like Ulthwe. During an expansion of the Eye, Altansar was sucked into the Eye of Terror itself.

The Thirteenth Crusade
During the Thirteenth Crusade, Phoenix Lord Maugan Ra lead an elite force of Dark Reapers and some Black Guardians, in a search for Altansar. It was during this pilgrimage that he found the Belial hex system, located deep within the Eye of Terror. Towards the end of the Crusade he formed the Ulthwe Strike Force and led them to the crone world of Belial IV. Depsite several early victories and the aid of the Harlequins, a Daemonic counterattack forced the Eldar back. As they reeled from the losses, the Craftworld Altansar drifted into Belial's orbit. The Eldar of Altansar joined their brethren from Ulthwe, defeating the Daemonic forces and helping the Eldar to reclaim the world.

Recent Activity
It is assumed Altansar is now safe again, as in Dawn of War 2 they are a playable Eldar Craftworld. This very likley suggests Altansar is once again safe.