This ancient woodland is located next to Roskilde Fjord, and excavations have shown that Grønnesse Skov was one of Zealand’s most significant early cultural centres during the Neolithic period. A dolmen, or exceptional burial chamber, is one of the most significant remnants of Denmark’s Neolithic history. It is made out of a large flat stone that is supported by three substantial pillars. The dolmen, known locally as Carlssten (Carl’s Stone), is one of Denmark’s largest and best-preserved examples of its kind. The woodland parking lot is not far, however it must be reached on foot.