Farming Cataclysm Heroics for Gold - Part 1 - The Vortex Pinnacle ( For Mop & cata Both but you will need a party of 3 at least in cata)

Vortex Pinnacle is the best instance for farming Volatile Air. It is an excellent way to make some gold if Volatile Air is expensive on your realm. This instance is profitable to farm both in normal and heroic mode.

Even if Volatile Air is worthless on your realm, it can be monopolized quite easily these days and you can turn it's price up .

Another reason to farm this instance is   Reins of the Drake of the North Wind flying mount which the second boss drops  by a 1%  chance. The mount also drops in normal mode, so you can reset the dungeon easily if you want to farm it. 

To get to the instance portal, take the portal to Uldum from your capital city. The instance portal is on one of the floating towers up in the sky above the sea, south-east of the map.

Loot and solo tactics

You don't need any tactics here since this instance is a piece of cake also if you have decent gear you can also pull multiple Mobs at a time safely

 Also drink    Potions of Treasure Finding to get even more loot. 

 it's a good idea to equip Golden Fleece for this dungeon, as the mobs are high enough level to give experience. It will not effect your farming performance, and you will be getting more gold in return.