This quest was marked obsolete by Blizzard and cannot be obtained or completed.
Return to the Searing Gorge and find Dorius's archaeology unit.
There is an empty, vacuous hole, where my heart used to be, <name>. The loss of Dorius is not one that I will soon recover from. I must see his final wish through - the perpetrators of this cold blooded murder must be brought to justice.
Return to the Searing Gorge and fulfill his last request: Free his men. The Dark Iron dwarves force their slaves to work in a sweltering mine called the Slag Pits. Search there for Dorius' men.