he Cenarion Circle's main expeditionary force in Outland is known as the Cenarion Expedition. Though it began as a small venture controlled directly by the Cenarion Circle, the expedition has become a large and fairly autonomous body. The expedition is based at Cenarion Refuge in the far east of Zangarmarsh, immediately west of Thornfang Hill in Hellfire Peninsula.

The druids' original goal in coming to Zangarmarsh was to study the rich wildlife there, but the group has discovered troubling goings-on in the marsh. Water levels in many parts of Zangarmarsh are decreasing, and some areas, such as the Dead Mire, have already suffered greatly from this strange phenomenon. The druids of the Cenarion Refuge believe that the naga are to blame, but the expedition cannot afford a direct confrontation with the many naga in Zangarmarsh and Coilfang Reservoir. The Cenarion Expedition needs the aid of adventurers willing to assist the druids in their dangerous fight against those who seek to disturb the marsh's natural balance. Anyone brave enough to combat the naga at Coilfang Reservoir will be well rewarded.

The base for the reputation rewards and quests for the Cenarion Expedition can be found at the Cenarion Refuge in eastern Zangarmarsh. You can gain reputation for Cenarion Expedition by completing quests in Hellfire Peninsula, Zangarmarsh, Terokkar Forest, and Blade's Edge Mountains. There are also several repeatable quests you can do to gain reputation. The other primary way to gain reputation is by running the instances of Coilfang Reservoir. Here are some tips to maximize your reputation gains:

Prior to Honored reputation You can kill Naga throughout Zangarmarsh to gain reputation. The Slave Pens, the first 5-man wing of Coilfang Reservoir, will also yield good reputation gains. You can gather Unidentified Plant Parts from various creatures around Zangarmarsh and turn them in for reputation. These can be turned in until the end of Friendly reputation.

From Honored to Revered The repeatable quest, "Uncatalogued Species", is started from an item that is occasionally obtained from turning in Unidentified Plant Parts. Now is a good time to do all the Cenarion Expedition quests from Hellfire Peninsula, Zangarmarsh, Terokkar Forest, and Blade's Edge Mountains. The reputation gains from Slave Pens and Underbog stop part of the way through Honored, making Steamvault your remaining source of reputation in Coilfang Reservoir. In Steamvault you can get access to a repeatable quest after looting a letter, "Orders from Lady Vashj", from a random monster inside. This quest will allow you to turn in Coilfang Armaments, found off of monsters inside Steamvault, for reputation. Running Steamvault and turning in Coilfang Armaments is an efficient way to finish getting to Revered.

From Revered to Exalted Continue to run Steamvault and turn in Coilfang Armaments. The Armaments are not soulbound, so you can get them from other players or from the Auction House. Uncatalogued Species will also continue to yield reputation. Lastly, you can get reputation from any wing of Coilfang Reservoir if you run them in Heroic Mode.