The Thirsty Troll Brew Fest – at Grundahl Park, 401 Blue Mounds Street, Mount Horeb – is an intimate beer sampling that features 25 craft brewers serving over 100 different beers. Live Music. Food served by area civic organizations. Get your picture taken with Jorgen the Thirsty Troll! Festivities run from 1-5 pm on Saturday. Don’t miss this signature event in Mount Horeb.