Haus am See Festival. 12 Stunden Open-Air Techno. Line-Up MAIN-STAGE 12:00-14:00 14:00-16:00 16:00-18:00 18:00-20:00 20:00-22:00 22:00-24:00 GREENSTAGE 12:00 - 14:00 14:00 - 16:00 16:00 - 18:00 18:00 - 20:00 20:00...