SureAI

Hello. So, I've saved the pig for the cave, and now I'm told to find the master brewer Elward. The quest tells me that "I should follow the river courser, and keep a lookout for the barrel", but now I've been all the way to both Erothin, Bridge of Doubtful Return, and all the way to Cahbaet without any luck. Anyone know where to find this barrel?