A long descent through the irradiated gnome capital. It is packed with machines and troggs and stacked over several levels, so it is easy to get lost. Mekgineer Thermaplugg is the last boss.

Before you go

The first boss, Grubbis, appears at the end of the event you start by talking to Blastmaster Emi Shortfuse. Keep Emi alive while the troggs pour in.
For Data Rescue, feed a White Punch Card through the Matrix Punchograph 3005 machines in turn until it becomes a Prismatic card. Machine A is outside the dungeon; B, C and D are inside.
The Workshop Key dropped by Electrocutioner 6000 lets you use the back entrance by the train depot next time.
Horde players who finish Scooty's quest Gnomer-gooooone! in Booty Bay can use the goblin transponder to reach Gnomeregan.

Dungeon map

Route

1
Lv 32GrubbisBoss
Talk to Blastmaster Emi Shortfuse: while she blows up the cave entrances, waves of troggs rush in and Grubbis arrives at the end. Don't let Emi die.
See this boss's drops →
2
Lv 30Viscous FalloutBoss
The boss of the irradiated area. The irradiated mobs around here are where you get the High Potency Radioactive Fallout for the Alliance quest The Only Cure is More Green Glow.
- Objective for “The Only Cure is More Green Glow”.
See this boss's drops →
3
KernobeeNPC
Find Kernobee and escort him to the Clockwerk Run exit to complete A Fine Mess (turn in to Scooty in Booty Bay). He stands in one of several spots.
- Pick up “A Fine Mess” here.
4
The Sparklematic 5200Objectskippable
Put the Grime-Encrusted Ring (a trash drop) into the Sparklematic 5200 in the Clean Zone to clean it for the quest Grime-Encrusted Ring. Matrix Punchograph 3005-B is in the Dormitory nearby.
- Turn in “Grime-Encrusted Ring” here.
- Pick up and turn in “The Sparklematic 5200!” and “More Sparklematic Action” here.
- Objective for “Data Rescue”.
5
Lv 32Electrocutioner 6000Boss
Uses Shock, Chain Bolt and Megavolt. Spread out so Chain Bolt doesn't bounce. Drops the Workshop Key, and Matrix Punchograph 3005-C is in his room.
- Objective for “Data Rescue”.
See this boss's drops →
6
Lv 32Crowd Pummeler 9-60Boss
Hits everyone around with Arcing Smash, Trample and Crowd Pummel. Melee should stand at the sides and back, ranged far away. Matrix Punchograph 3005-D in the Launch Bay turns out the Prismatic card.
- Objective for “Data Rescue”.
See this boss's drops →
7
Dark Iron AmbassadorRareskippable
A rare that casts Fireball, wears Fire Shield and Frost Armor and summons a Burning Servant. Safe to skip.
8
Dark Iron AgentNPCskippable
Dark Iron Agents drop the Grime-Encrusted Ring, which starts the quest of the same name. Agents appear in many places in the dungeon.
- Get the item that starts “Grime-Encrusted Ring” here.
9
Lv 34Mekgineer ThermapluggBoss
Knocks the tank back with Knock Away. During the fight walking bombs come out of the gnome-face machines around the room. Press the machines to stop them or kill the bombs first. Drops Thermaplugg's Safe Combination for the Horde quest.
- Objective for “The Grand Betrayal” and “Rig Wars”.
See this boss's drops →
10
Thermaplugg's SafeObjectskippable
The safe holding the blueprints for the Horde quest Rig Wars. Thermaplugg drops the safe combination.
- Objective for “Rig Wars”.

Dungeon quests

Save Techbot's Brain!Level 26Accept at 20Alliance
Bring Techbot's Memory Core to Tinkmaster Overspark in Ironforge.
Data RescueLevel 30Accept at 25Alliance
Bring a Prismatic Punch Card to Master Mechanic Castpipe in Ironforge.
Essential ArtificialsLevel 30Accept at 24Alliance
Bring 12 Essential Artificials to Klockmort Spannerspan in Ironforge.
Gyrodrillmatic ExcavationatorsLevel 30Accept at 20Alliance
Bring twenty-four Robo-mechanical Guts to Shoni in Stormwind.
The Only Cure is More Green GlowLevel 30Accept at 20Alliance
Travel to Gnomeregan and bring back High Potency Radioactive Fallout. Be warned, the fallout is unstable and will collapse rather quickly. Ozzie will also require your Heavy Leaden Collection Phial when the task is complete.
The Grand BetrayalLevel 35Accept at 25Alliance
Venture to Gnomeregan and kill Mekgineer Thermaplugg. Return to High Tinker Mekkatorque when the task is complete.
Rig WarsLevel 35Accept at 25Horde
Retrieve the Rig Blueprints and Thermaplugg's Safe Combination from Gnomeregan and bring them to Nogg in Orgrimmar.
A Fine MessLevel 30Accept at 20
Escort Kernobee to the Clockwerk Run exit and then report to Scooty in Booty Bay.
The Sparklematic 5200!Level 30Accept at 25
Insert a Grime-Encrusted Item into the Sparklematic 5200, and be sure to have three silver coins to start the machine.
Grime-Encrusted RingLevel 34Accept at 28
Figure out a way to remove the grime from the Grime-Encrusted Ring.

See the quest reward items →