The Warrior's Grave is an object in Dragon Age: Origins.
Location[]
Located down a tunnel to the right shortly after you enter Ortan Thaig. Examing the grave yields the Codex entry: Topsider's Honor (or updates the entry, if it is already activated from the genlock emissary in Caridin's Cross) and activates the quest An Admirable Topsider. In the end of the quest, when all the pieces of the sword have been assembled, the grave will contain Topsider's Honor.
Map[]
Map location of the grave