This quest was marked obsolete by Blizzard and cannot be obtained or completed.
Talk to Windcaller Proudhorn at Cenarion Hold in Silithus.
Attention, champions of the Horde! There's a threat we've left unchallenged for too long. Tremors in the earth near silithid hives all around Azeroth have alerted us to large movements in their numbers as they prepare for expansion.
Cenarion Circle forces are gathering in Silithus to take the fight to the silithid before it's too late! No more shall they defile our lands!
All able-bodied combatants are to report to Windcaller Proudhorn at Cenarion Hold! The silithid shall be vanquished!
Excellent, a new recruit answering the call to arms against the silithid. Welcome to Cenarion Hold, <class>. I am pleased to see the words of our emissaries are reaching heroes of your caliber. You will find no shortage of opportunities to help us in our efforts here and I expect you'll quickly prove to be a valuable ally to our cause.