Slaying the Beast
Kill the Felguard Taragaman the Hungerer and bring his heart to Neeru Fireblade.
Kill the Felguard Taragaman the Hungerer and bring his heart to Neeru Fireblade.

Neeru stands next to the dungeon entrance in the Cleft of Shadow.
Do it alongside Hidden Enemies, which also sends you to Neeru.
Horde: Neeru Fireblade in Orgrimmar (49.6, 50.5).
Horde: Neeru Fireblade in Orgrimmar (49.8, 50.5).
experience only, 2,350 XP.
Slaying the Beast is a level 16 quest; you can pick it up from level 9. It takes you into Ragefire Chasm.
All Ragefire Chasm quests on one map ·Ragefire Chasm dungeon guide
Sources: Quest data from ForeverDB.net · ForeverDB: Ragefire Chasm dungeon · ForeverDB: Orgrimmar quests · ForeverDB: Thunder Bluff quests · ForeverDB: Undercity quests · ForeverDB: Hidden Enemies · ForeverDB: Returning the Lost Satchel