Guided fossil-hunting tours led by GeoCenter guides (in holidays and high season), or self-guided beach hunts for 70 million-year-old fossils like oysters, sea urchins, belemnites—even mosasaur teeth if you're lucky.
Guided tours run daily at 11 am and 2 pm in holidays; cost DKK 25 + entrance ticket; GeoCenter offers expert guidance and app 'Oplev Møn' for self-guided hunts
Spring to autumn (e.g., Easter to autumn break)