one of europe's longest-running large-scale outdoor electronic festivals, founded in 1994 and held across an arid desert plateau in aragón. the format runs for 22 continuous hours, drawing crowds up to 20,000 across multiple stages with full industrial-scale production, covering techno, house, and harder electronic styles.

after a years-long hiatus the festival returned in the early 2020s and has since re-established itself on the european festival calendar. the current format spreads programming across a 360-degree main arena, an elrow stage, and an artcore stage curated by indira paganotto.