The Rethban Gauntlet

I call my challenge the Rethban Gauntlet. To pass the trial, all you must do is enter the Rethban Caverns, to the first fork, then return here. Easy! Except there are a few wrinkles... You have to return within an hour. There are whole heaps of Redridge Gnolls in the way. Before you start, you have to take a swig of my family's signature drink: Barleybrew Scalder! So what do you say? The Rethban Caverns are in the foothills north of Lakeshire. Are you ready to run the Rethban Gauntlet?