At Fossil- og Molermuseum on the island of Mors, you can not only explore the prehistoric past of Denmark through a remarkable fossil exhibition, but even go digging for it yourself. Thanks to the thick layers of moclay created by microscopic algae 55 million years ago, the underground is bursting with fossils. In fact, the area is the origin of almost 40 per cent of all Danekræ (a Danish term for natural history finds that, due to their significance, belong to the state), explains Jan Audun Rasmussen, museum curator with a PhD in geology. “The moclay is made of the empty shells from algae dropping to the bottom of the sea, which would back then have been about 300 to 400 metres deep.”