The WoW Old Trunk is a locked treasure chest found in the back of a cart at an outpost in Zaralek Cavern. Much like the Dreamer's Bounty, it's not immediately obvious how to get to the treasure inside, so you could spend a lot of time searching the area fruitlessly looking for a key. As it happens, you need to locate and follow the Thieving Rock Mouse to get inside.
The Zaralek Cavern is a new zone in World of Warcraft, introduced with the 10.1 update. The area is completely underground, and you can use your dragonriding mount to fly from the surface of the Dragon Isles, all the way down into the cavern's depths. If you've come across this locked treasure chest, here's how to unlock the WoW Old Trunk and all the Thieving Rock Mouse locations.
