The Blood Furnace

Level and attunement

This guide shows all information (Alliance and Horde).
Minimum entrance level: 55
Minimum level to obtain all quests: 59
Meetingstone level: 55-70
Advised level (most fun): 61-63
Attunement: None.

Achievements for this dungeon

The Blood Furnace: 10 points: Defeat Keli'dan the Breaker.

Quests for this dungeon

[63D] The Blood is Life

Given by Gunny in Hellfire Peninsula for Alliance.

Given by Caza'rez in Hellfire Peninsula for Horde.
You have to collect 10 Fel Orc Blood Vails that drop of any Orc inside the dungeon. To get this quest you need to loot the Ominous Letter that drops off Vazruden the Herald in Hellfire Ramparts. Check the Ramparts guide for more info.
Reward items:

[63D] Heart of Rage

Given by Gunny in Hellfire Peninsula for Alliance.

Given by Caza'rez in Hellfire Peninsula for Horde.
Just go trough the dungeon to complete this quest... you have to investigate Blood Furnace. This quest is the followup of the Hellfire Ramparts quest [62D] Weaken the Ramparts. Check the Ramparts guide for more info.
Reward items:

Map

This is the map with important spots of the dungeon. Get full map here.

(E = Entrance)

Bosses, tactics and drops

[62E] The Maker

He doesn't hit particularly hard and can generally be DPS burnt pretty quickly. The Maker has several special attacks, including an instant cast mind control, none of which are devastating if he is taken down quickly.
Item drops:

[63E] Broggok

The Broggok encounter consists of four waves of four orcs each, followed by Broggok. The waves are timed, but will come early if you finish off the previous wave before the timer is up. Each wave has one more elite and one less non elite than the previous wave. All are vulnerable to crowd control. If you wipe on any orc wave, the encounter resets, if you wipe on Broggok after killing all orcs, only Broggok resets, orcs don't.
Item drops:

[63E] Keli'dan the Breaker

Keli'dan is channeling the spell holding down Magtheridon with five warlocks. He does not attack until all the warlocks are taken down. All warlocks aggro at the same time, and they're vulnerable to crowd control. Keli'dan has an occasional ground zero area effect spell which is preceded by an emote and a period of immunity; there is normally sufficient time for everyone to get out of range of this effect.
Item drops: