The Abbey Bell Rope can be found in New Hearthglen in Dragonblight.
Pulling the rope activates a small event:
- Onslaught Raven Priest says: Gah! What are you doing?
After a short walk from High Abbot Landgren.
- Devout Bodyguard says: Hey, who rang the bell?
- Onslaught Raven Priest says: A member of the priesthood whom I've never before.