one of belgium's longest-running multi-genre open-air festivals, running since 1988 and now drawing around 225,000 people across five days on the former industrial plains of the borinage coal region. organized by dour music festival sa, it spans multiple stages including the large arena, de balzaal, boombox, and dub corner, covering electronic music, hip-hop, reggae, and beyond. the electronic programming consistently reaches into techno and harder club sounds alongside the broader bill.

the festival has grown from a single-day event with a handful of acts into one of the larger independent festivals in western europe, and it holds a consistent place on the regional calendar for heads coming from across the continent. camping is central to the format, with several tiers of on-site accommodation spread across an open field site.