In 4.3.0 Blizzard reformed the quest structure to be like the classic dungeons (bread crumb quest followed by one or more dungeon quests).
This quest leads you to the Steamvaults entrance and the main quest giver.
Quest
Storming the Steamvault
A World of Warcraft quest in The Steamvault. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
Does not count towards Mysteries of the Marsh
Ok, so you have to kill the 1st and 2nd boss. There is a panel behind them you must activate. Once you activate both panels you can enter and deal w the 3rd boss.
Quest facts
The client quest POI data records no map location for this quest, so no map is shown.
Check whether you have already completed this quest
in-game: /run print(C_QuestLog.IsQuestFlaggedCompleted(29616))
Description
We have not as of yet been able to stop the naga in the Steamvault, where most of their pumping infrastructure is located. Thankfully, the expedition I sent there is hard at work trying to change that fact. Will you travel to the Steamvault and offer Watcher Jhang and her crew your aid?
Getting there
Inside the dungeon: The Steamvault
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.
Bosses in the Adventure Guide, in order: Hydromancer Thespia, Mekgineer Steamrigger, Warlord Kalithresh.
Entrance: Serpent Lake, Zangarmarsh at 50.2, 33.3.
Instance text, bosses and entrances are the client’s Adventure Guide data.
Community notes from Wowhead · 6 comments
Top 3 shown aboveThe comments below were written by Wowhead users. They are community notes, not TheWoWDB comments. See them in context on Wowhead.
The top 3 are shown in Top Comments above. Read all 6 on Wowhead.