Destroy the Legions of Rahotep. It's a group encounter, with tank and healer at least level 60 is recommended for this group. There are approximately 24 mobs of lvl. 55^, ^^ and ^^^ undead creatures, followed by Rahotep himself (Lv. 55x2 ).
Begin the encounter by going to approx ( -281, -139, -1171 ) /waypoint -281, -139, -1171, which is a north exit from the Northern lake of the Twin Tears, in the Sinking Sands.
WARNING: The Rahotep event will begin immediately when someone on that step of the quest gets around that area. The event will despawn relatively quickly. There used to be a 2 hour respawn timer, but now he will respawn if you fail. (confirmed 9/28/2012). As of 1/19/2013, the respawn time after failure is approximately 20 minutes.
Note: Induce some berserkers and healers to help. You probably cannot finish this by yourself.
Note: Rahotep has been changed into a epicx2 mob now, a 4x raid is no longer required.