If you've explored Hellfire Ramparts and gotten a taste for the new Burning Crusade loot by now and are ready for a bit more, It's time to check out the Blood Furnace. This guide will walk you through exploring the second instance in the Outlands.

The Blood Furnace is the second wing of the Hellfire Citadel and are generally referred to as the Furnace. The citadel itself straddles the path of glory leading to the Dark Portal and contains 3 other instances. The Citadel is the home of the Fel Orcs in Hellfire Peninsula and was built by Blackhand and Gul’dan and still houses the Kargath Bladefist.

The Blood Furnace instance takes place in a tower that overlooks the Ramparts. Once in the instance you find out that the Fel orcs are conducting experiments growing a new orc type using the blood of Magtheridon, who is trapped below the instance in his lair. You can even catch a glimpse of Magtheridon through the grid iron floor of Keli'dans room.

You can find all the details in TenTonHammer's Guide to the Blood Furnace