The subject of this article or section is part of Brewfest, a seasonal event that lasts two weeks. Once the event has run its course, this will no longer be available until next year, but there are no guarantees.
It is usable in any location in the world and summons a mole machine out of the ground.
Party, raid, and battleground group members may click on the mole machine to teleport to the Grim Guzzler while inside BRD. It originally would do so from anywhere.
Using the mole machine while not inside BRD will teleport you to the beginning of the dungeon instead.
If you have this item, you can approach the roadies at the The Tauren Chieftains drum set in the Grim Guzzler and trigger a performance by the band. This is especially handy during Brewfest because you can get the 5 minute +10% to all stats buff to help with the fight against Coren.
Patch 7.0.3 (2016-07-19): Now sends the player to the beginning of the Blackrock Depths instance instead of to the Grim Guzzler while outside the instance, and to the Grim Guzzler while inside the instance.