Talk to Boxey Boltspinner in the Brewfest camp.
The Dark Irons took a beating! As they rushed back to the Grim Guzzler, a portion of their transport fell off. More importantly, you managed to keep the camp safe... today. Head over to Boxey and explain your heroic triumph over the Dark Iron dwarves.
Holiday - Brewfest
You will also get these rewards:
Upon completion of this quest you will gain: