Down The Rabbit Hole is a three-day boutique-leaning festival in the green lake-and-woods setting of De Groene Heuvels. It mixes major alternative, electronic, and left-field acts with hidden discos, art, strong food, and a camping setup that feels more like a surreal summer village than a standard festival field. You can arrive from Thursday noon and stay until Monday afternoon, which tells you exactly what kind of weekend it wants to be.