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Bog, UB
Coilfang Reservoir loading screen.jpg
Underbog loading graphic

NagaNaga Naga

End boss
Advised level


Player limit



 [Reservoir Key] (Heroic mode)

Associated faction

Swamplord Musel'ek
The Black Stalker


Other Coilfang Reservoir instances
Coilfang Reservoir
The Slave Pens (5)

Lord Ahune (event)
Mennu the Betrayer
Rokmar the Crackler

The Underbog (5)

Swamplord Musel'ek
The Black Stalker

The Steamvault (5)

Hydromancer Thespia
Mekgineer Steamrigger
Warlord Kalithresh

Serpentshrine Cavern (25)

Hydross the Unstable
The Lurker Below
Leotheras the Blind
Fathom-Lord Karathress
Morogrim Tidewalker
Lady Vashj

Underbog is the 2nd 5-man instance within the Coilfang Reservoir found on the east side of the naga invested complex. The Underbog is home to the last vestiges of natural life left within Coilfang Reservoir that has not been completely stamped out by the Naga incursion. The only Naga presence in this section defends the structure they built to house their hydra god, Ghaz'an. The rest of the Underbog is a natural habitat, home to the most powerful species of animal life in Zangarmarsh.


Main article: Coilfang Reservoir

Here, concealed by the cold fathoms, Lady Vashj's naga ply their resources - the exotic flora and fauna of the cavernous Underbog, the Broken who toil in their claustrophobic Slave Pens, and the arcane machinery they've constructed in the Steamvault - towards a catastrophic goal set forth by Illidan the Betrayer. Unopposed, they will drain Zangarmarsh's waters, and claim dominion over the dry bog that remains.[1]

Dungeon Journal

Coilfang Reservoir is the name for a naga-dominated compound that lurks under Zangarmarsh's deepest waters. The reservoir, punctured throughout by massive open pipes and pistons, seems big enough to house armies - and, yet, its purpose isn't strictly military.



Dungeon Denizens

Underbog bosses
Main article: Underbog mobs
Bosses Monsters NPCs


Main article: Underbog loot


Removed quests

Removed from game The subject of this section has been removed from World of Warcraft.

Neutral Underbog quests
Quest Name Quest Giver Subzone
This quest takes place in this zone N [65D] Lost in Action Neutral Watcher Jhang Underbog
This quest takes place in this zone N [65] Bring Me A Shrubbery! Neutral Gzhun'tt Underbog
This quest takes place in this zone N [65] Bring Me Another Shrubbery! Neutral Gzhun'tt Underbog
This quest takes place in this zone N [65D] Oh, It's On! Neutral T'shu Underbog
This quest takes place in this zone N [65D] Stalk the Stalker Neutral Khn'nix Underbog



On normal, it will give approximately 1100 Cenarion Expedition Reputation through Friendly, and it also gives ~3300 Sporeggar reputation through exalted. Heroic mode will give approximately 2600 rep with Cenarion Expedition through exalted, but no longer give reputation with Sporeggar.


Patch changes



External links