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A glowing pump chamber in Coilfang Reservoir beside Lady Vashj

The Underbog Guide — Dungeon guide · WoW Burning Crusade

Level
63–65
Group
5 players
Bosses
4
Difficulty
Normal and Heroic
Location
Zangarmarsh
Key
Coilfang Reservoir – Heroic

How the run goes

A cavern of giant fungi under Coilfang Reservoir. The path climbs past Hungarfen's mushrooms and Ghaz'an's waters to Swamplord Musel'ek's hunting grounds, then drops down to The Black Stalker.

Group: A tank, a healer and three damage dealers from about level 63. Bog giants and lords hit hard and patrol; watch for them before every pull.

Map and route

100%

Hungarfen in the southern mushroom grove, Ghaz'an in the eastern lake, then Swamplord Musel'ek and The Black Stalker to the north and west.

  1. strategy
  2. strategy
  3. strategy
  4. strategy
  1. 1.The fungal caverns

    From the entrance through the caves to Hungarfen among his mushrooms, then on to the water where Ghaz'an patrols.

    1. 1Hungarfen
    2. 2Ghaz'an
  2. 2.The upper camp and the stalker's cave

    Up the ramps to Swamplord Musel'ek and his bear Claw, then down into the cave where The Black Stalker waits.

    1. 3Swamplord Musel'ek
    2. 4The Black Stalker

Boss by boss

The fungal caverns

On the way: Bog giants and fen rays. Patrols cross the caves: wait for them before pulling.

  1. Normal
    Level
    65 · Elite
    Health
    65,054
    Armor
    5,291
    Heroic
    Level
    72 · Elite
    Health
    110,054
    Armor
    7,387
    • Foul Spores
    • Acid GeyserDeals 2188 to 2812 Nature to the target and all nearby players.

    A fungal giant who spawns mushrooms that explode, and below a fifth of his health stands still and releases Foul Spores around himself.

    Tanks
    Move him away from his mushrooms; at the end, step back from Foul Spores.
    Healers
    Stay away from the mushrooms and out of the spores.
    Damage dealers
    Avoid the mushrooms; ranged keep hitting during Foul Spores while melee step out.
  2. Normal
    Level
    65 · Elite
    Health
    59,140
    Armor
    5,291
    Heroic
    Level
    72 · Elite
    Health
    99,630
    Armor
    7,387
    • Tail SweepInflicts 600 to 1000 damage on enemies in a cone behind the caster, knocking them back.
    • Acid SpitInflicts Nature damage to an enemy.
    • Acid BreathInflicts 200 Nature damage and an additional 20 damage every 3 sec. to enemies in a cone in front of the caster. Lasts 20 sec.
    • EnrageIncreases the caster's attack speed by 30% and the Physical damage it deals by 1 for 2 min.

    A hydra that patrols the water. He breathes acid in front of him, spits acid, sweeps his tail behind him and enrages at low health.

    Tanks
    Face him away from the group and keep your back clear for the tail sweep.
    Healers
    Acid Breath and Spit hurt the tank; keep healing steady and stand to his side.
    Damage dealers
    Stand at his sides, not in front (breath) or behind (tail sweep), and keep damage up.

The upper camp and the stalker's cave

On the way: Naga and hunters near Musel'ek; spore bats and striders near the end.

  1. 3

    Swamplord Musel'ek

    Loot and drops →
    Normal
    Level
    65 · Elite
    Health
    53,224
    Mana
    55,800
    Armor
    4,275
    Heroic
    Level
    72 · Elite
    Health
    89,224
    Mana
    66,180
    Armor
    7,291
    • Multi-ShotFires a volley of missiles at an enemy and its nearby allies, striking up to 3 targets for normal damage plus 200.
    • Throw Freezing TrapThrows a Proximity Bomb.
    • Hunter's MarkPlaces the Hunter's Mark on the target, increasing the ranged attack power of all attackers against that target by 1500. In addition, the target of this ability can always be seen by the hunter whether it stealths or turns invisible. The target also appears on the mini-map. Lasts for 20 sec.
    • Aimed ShotAn aimed shot that increases ranged damage by 600.
    • Knock AwayInflicts normal damage plus 30 to an enemy and knocks it back.
    • Raptor StrikeStrikes at an enemy, inflicting increased melee damage.
    • Bear Command
    • DeterrenceWhen activated, increases your Dodge and Parry chance by 25% for 10 sec.

    A naga hunter with his bear Claw. He freezes players with traps, shoots Aimed Shot and Multi-Shot, and knocks the tank away.

    Tanks
    One tank on Musel'ek, the bear tanked or controlled. He moves away to shoot: pull him back.
    Healers
    Freezing Trap takes a player out; heal through Multi-Shot.
    Damage dealers
    Kill Musel'ek first while Claw is held or controlled, then finish the bear.
  2. 4

    The Black Stalker

    Loot and drops →
    Normal
    Level
    65 · Elite
    Health
    75,696
    Mana
    27,900
    Armor
    4,275
    Heroic
    Level
    72 · Elite
    Health
    127,505
    Mana
    33,090
    Armor
    5,954
    • SuspensionSurrounds an enemy with a cyclone for up to 20 sec. If the target takes any damage, it will break free of the imprisoning winds.
    • Levitate
    • Static ChargeCharges an enemy with energy, inflicting 4500 Nature damage over 12 sec. While the target is affected, the static periodically zaps its nearby allies with Nature damage as well.
    • Chain LightningStrikes an enemy with a lightning bolt that arcs to another nearby enemy. The spell affects up to 5 targets, inflicting greater Nature damage to each successive target.

    A spore bat queen who levitates players and drops them, throws Chain Lightning and puts Static Charge on a player, which shocks those near them. On Heroic she summons spore striders.

    Tanks
    Hold her in the middle; pick up the striders on Heroic.
    Healers
    Levitated players fall: heal them. Spread out for Chain Lightning and Static Charge.
    Damage dealers
    Spread out, kill striders on Heroic, then the stalker.

Before you go

  • Watch giant and bog-lord patrols before beginning a nearby pack.
  • Collect quest flowers and trapped expedition members on the route so you do not need to backtrack.
  • No Normal key. Heroic uses the Reservoir Key and level 70.

Coilfang Reservoir – Heroic attunement

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