WoWDB

For the Alliance version, see A Potential Ally.

The ring of fire is literally just down the path.  The flames are very dense, so even if you are running with all game graphic settings at Low, you can't miss it.  Run up to the ring (and run around inside it if you want to, the flames are purely effect and will not hurt your character no longer entirely accurate since an undocumented hotfix in Patch 6.0.3 - standing in the fire applies  Burning but the buff can be removed by right-clicking its icon on the character frame) and a special action bar will appear at the bottom center of your screen.  You can click it to use the quest item, or you can right-click the quest item in your bags or its icon under the Quest Objectives tracker.  You must channel for 20 seconds in order to extinguish all the flames.

You may have to kill a couple Shattered Hand orcs along the way, but they didn't hit my mage very hard even when I stood in its channeled ability (Bone Saw, I think).  There were a lot of players running around killing things, though, so perhaps there will be more density of mobs on live servers once things calm down after the expansion's launch.

The next quest is Kill Your Hundred.