Rumbles of Thunder

Rumbles of Thunder is an exploration achievement earned for interacting with the lore objects on the Isle of Thunder that tell the tale of Lei Shen.

Upon interaction with the fourth lore object, adventurers will immediately gain 2000 reputation with the Lorewalkers, and sends a letter via the in-game mail system:

Attached is Rumbles of Thunder (item), which begins a quest, Rumbles of Thunder (quest).