It starts in a mine, runs through a goblin foundry and ends on a warship in an underground shipyard. The path is linear, and the only real trick is handling the adds VanCleef summons.

Before you go

Defias elites roam the road to Moonbrook, so it is safer to group up at the entrance.
Mr. Smite stuns the whole party and swaps weapons; regroup as soon as the stun breaks.
A poison dispel helps on Captain Greenskin.
VanCleef drops An Unsent Letter, which starts a follow-up quest. Pick it up before you leave.

Dungeon map

Route

1
Lv 19Rhahk'ZorBoss
Rhahk'Zor Slam stuns the tank; healers keep the tank topped through it.
See this boss's drops →
2
Miner JohnsonRareskippable
A rare elite in a small side room. Safe to skip.
3
Lv 20SneedBoss
Destroy Sneed's Shredder first and Sneed jumps out; he uses Disarm.
- Objective for “Underground Assault”.
See this boss's drops →
4
Lv 20GilnidBoss
Throws Molten Metal while nearby smelters join in, so clear the adds first.
- Objective for “Underground Assault”.
See this boss's drops →
5
Defias GunpowderObject
Gunpowder stacked beside the foundry. The explosives for Destruction in Deadmines go by the hidden forge here.
- Objective for “Destruction in Deadmines”.
6
Lv 20Mr. SmiteBoss
From here you are aboard the ship. The last three are aboard it too, with Cookie in the galley below deck. As his health drops he stuns the group with Smite Stomp and runs to his chest to swap weapons; regroup after each stun.
See this boss's drops →
7
Lv 20CookieBoss
Down in the galley below deck. He heals himself with Cookie's Cooking and uses Acid Splash. Interrupt the cooking.
See this boss's drops →
8
Lv 20Captain GreenskinBoss
Uses Poisoned Harpoon and Cleave, so cure the poison and stay behind the tank.
See this boss's drops →
9
Lv 21Edwin VanCleefBoss
The last fight, on the upper deck toward the stern. He dual-wields with Thrash and summons Defias guards with VanCleef's Allies as his health drops. Control or kill the adds first.
- Get the item that starts “The Unsent Letter” here.
- Objective for “The Defias Brotherhood”.
See this boss's drops →

Dungeon quests

Red Silk BandanasLevel 17Accept at 14Alliance
Scout Riell at the Sentinel Hill Tower wants you to bring her 10 Red Silk Bandanas.
Collecting MemoriesLevel 18Accept at 14Alliance
Retrieve 4 Miners' Union Cards and return them to Wilder Thistlenettle in Stormwind.
Destruction in DeadminesLevel 18Accept at 9Alliance
Find the forge hidden in the Deadmines, and plant the Extra-Destructive Explosives nearby. Then, meet up with Alba Fairmoon at the Deadmines exit.
Oh Brother...Level 20Accept at 15Alliance
Bring Foreman Thistlenettle's Explorers' League Badge to Wilder Thistlenettle in Stormwind.
Underground AssaultLevel 20Accept at 15Alliance
Retrieve the Gnoam Sprecklesprocket from the Deadmines and return it to Shoni the Shilent in Stormwind.
The Defias BrotherhoodLevel 22Accept at 14Alliance
Kill Edwin VanCleef and bring his head to Gryan Stoutmantle.
The Test of RighteousnessLevel 22Accept at 20AlliancePaladin only
Using Jordan's Weapon Notes, find some Whitestone Oak Lumber, Bailor's Refined Ore Shipment, Jordan's Smithing Hammer, and a Kor Gem, and return them to Jordan Stilwell in Ironforge.
The Unsent LetterLevel 22Accept at 16Alliance
Deliver the Letter to the City Architect to Baros Alexston in Stormwind.

See the quest reward items →