Blackfathom Deeps Blackfathom Deeps is a partially underwater dungeon in northwestern Ashenvale . It is accessed by a stair - lined shaft that requires one to swim through an underwater entrance . The depths are comprised of a series of watery caverns leading deep to a temple devoted to the Old Gods . The Twilight ' s Hammer cult runs this shrine , and it has joined forces with local naga and satyr s to defend the unholy creature , Aku ' mai . It seems an Old God may be underneath the land . History . This series of ruins and caverns was built into the side of a cliff directly south of Black Fathom Bay . Many dangerous creatures lurk within - including , if tales at the Fish Eye Tavern are to believed , ghosts of heroes that fell to some nastiness while within the Deeps . Others suggest that this place , once a night elf temple to Elune , is now the headquarters of the vile warlocks , known as the Shadow Council . The naga here seem to be searching for something . The Twilight ’ s Hammer , a foul cult dedicated to the Old Gods , works with the naga in the underground ruins for an unknown purpose . Walkthrough . This underwater cove can be tricky to navigate for the first time , but it ' s a great place to hone your skills and find your role when in a group . Level appropriate groups should watch out for two things . The first is that there are many magic casting Naga which , when amassed in numbers , can do a good deal of damage . Always keep a warrior with shield bash on any casting mobs , or any other class that can stun / interrupt like Shamans and Paladins . Also , this is a great dungeon to try out crowd control . Many of the enemies pulled to you will come with friends . In addition , there are invisible Satyr that you cannot see until they have come close enough to aggro you . Caution should be used when combating the murlocs . Once at low health , they run quite fast , often running back towards the other murlocs and the murloc boss Gelihast . Keep a form of snare on these guys . The latter part of the instance includes the Twilight Cultists . These foes come in groups of two or three , but often can include more if you aren ' t aware of wanderers . The ideal way to avoid an unwanted add is to pull with range , targeting the casters first ( which you can get to follow you by cutting the Line of Sight , i . e . turning around a corner ) , and sheeping , sapping , or off tanking the adds . Also , having the highest level person in your group do the pulling helps , due to their smaller aggro radius . The ' summoning chamber ' with Twilight Lord Kelris includes many other cultists in the room . It is recommended to use the walled off entrance to your advantage , pulling the mobs one by one from the large room until Kelris is alone . After the room is cleared , he is ready to be engaged safely . Once he is defeated , all four candles pieces on the middle altar will need to be lit in order to advance past the large door to the final boss . Right - click these one at a time because a small group of mobs is summoned from the adjacent doors every time you do . Defeat these one at a time to avoid death . The final boss is relatively easy if you have a dedicated tank and healer . See walk - through for Aku ' mai . A stylishly hatted dwarf will await you at the end , giving Alliance players an option to port to Darnassus . Loot . See Blackfathom Deeps loot .