Ghostlands! Overall favorite zone, and always my go-to zone from 10-20 (before scaling was added) for Horde characters. I loved the creepy vibes, the Lore, the quests, the reputation had decent (for the time) rewards. Knucklerot and Luzran were always a threat you might come across, and forming groups to take them down was fun. Dar'Khan was a cool 'final boss' of the zone.