Blackfathom Deeps

Dungeon, level 22+. 11 quests, with where to get each one and what the quest giver looks like.

Quests

Allegiance to the Old Gods (level 22, Horde)

Bring the Damp Note to Je'neu Sancrea in Ashenvale.

Get it from: unknown. Requires level 17. Classic data, not yet confirmed in Forever

The Essence of Aku'Mai (level 22, Horde)

Bring 20 Sapphires of Aku'Mai to Je'neu Sancrea in Ashenvale.

Get it from: Je'neu Sancrea <The Earthen Ring>, Ashenvale, at Zoram'gar Outpost (11.6, 34.3). Requires level 17. First: Trouble in the Deeps. Classic data, not yet confirmed in Forever

Trouble in the Deeps (level 22, Horde)

Speak to Je'neu Sancrea in Ashenvale.

Get it from: Tsunaman, Stonetalon Mountains, at Sun Rock Retreat (47.4, 64.2). Requires level 17. Classic data, not yet confirmed in Forever

Knowledge in the Deeps (level 23, Alliance)

Bring the Lorgalis Manuscript to Gerrig Bonegrip in the Forlorn Cavern in Ironforge.

Get it from: Gerrig Bonegrip, Ironforge (50.8, 5.6). Requires level 10. Classic data, not yet confirmed in Forever

In Search of Thaelrid (level 24, Alliance)

Seek out Argent Guard Thaelrid in Blackfathom Deeps.

Get it from: Dawnwatcher Shaedlass <The Argent Dawn>, Darnassus (55.4, 25.0). Requires level 18. Classic data, not yet confirmed in Forever

Researching the Corruption (level 24, Alliance)

Gershala Nightwhisper in Auberdine wants 8 Corrupt Brain stems.

Get it from: Gershala Nightwhisper, Darkshore, at Auberdine (38.3, 43.0). Requires level 18. Classic data, not yet confirmed in Forever

Twilight Falls (level 25, Alliance)

Bring 10 Twilight Pendants to Argent Guard Manados in Darnassus.

Get it from: Argent Guard Manados <The Argent Dawn>, Darnassus (55.2, 24.0). Requires level 20. Classic data, not yet confirmed in Forever

Allegiance to the Old Gods (level 26, Horde)

Kill Lorgus Jett in Blackfathom Deeps and then return to Je'neu Sancrea in Ashenvale.

Get it from: Je'neu Sancrea <The Earthen Ring>, Ashenvale, at Zoram'gar Outpost (11.6, 34.3). Requires level 17. First: Allegiance to the Old Gods. Classic data, not yet confirmed in Forever

Amongst the Ruins (level 27, Horde)

Bring the Fathom Core to Je'neu Sancrea at Zoram'gar Outpost, Ashenvale.

Get it from: Je'neu Sancrea <The Earthen Ring>, Ashenvale, at Zoram'gar Outpost (11.6, 34.3). Requires level 21. Classic data, not yet confirmed in Forever

Blackfathom Villainy (level 27, Alliance)

Bring the head of Twilight Lord Kelris to Dawnwatcher Selgorm in Darnassus.

Get it from: Argent Guard Thaelrid <The Argent Dawn>, inside Blackfathom Deeps. Requires level 18. First: In Search of Thaelrid. Classic data, not yet confirmed in Forever

Blackfathom Villainy (level 27, Horde)

Bring the head of Twilight Lord Kelris to Bashana Runetotem in Thunder Bluff.

Get it from: Argent Guard Thaelrid <The Argent Dawn>, inside Blackfathom Deeps. Requires level 18. Classic data, not yet confirmed in Forever

Bosses

Ghamoo-ra, Lady Sarevess, Geilhast, Lorgus Jett, Old Serra'kis, Twilight Lord Kelris, Baron Aquanis, Aku'mai, Gelihast

Classic quest data from CMaNGOS classic-db (GPL-3.0); maps, models and confirmed quests from WoW Forever.