Urszebya

Urszebya, Ursun's Teeth, is a valley dotted with many standing stones. It is said to be the place where Ursun took a bite out of the world, leaving some of his teeth behind, and it is deeply sacred to all Kislevites. Even those who have never been here—few Kislevites are afforded such an opportunity—know of it and revere it. Over the centuries, it has also been the burial place of many of the greatest heroes of the land, a practise that adds to its reputation.

Urszebya was the site of one of the greatest battles of the Storm of Chaos, where an army led by the High Zar Aelfric Cyenwulf and accompanied by a Dragon Ogre was defeated by a combination of bravery and the Tzarina's magic. It was a bloody victory, however, and many soldiers--Kislevite, Imperial, and Tilean—fell. The respect felt for the location is now tinged with sadness at the great loss suffered here.

Source
pg. 57
 * Warhammer Fantasy RPG 2nd ED -- Realm of the Ice Queen