Syvhøje (Seven Hills) are 6 (!) burial mounds located between Højby and Nykøbing Sj. The burial mounds date back to the Early Bronze Age apprx. 500 years b.C. and have not yet been excavated.
Access from the parking lot by Næsholm on Nygaardsvej: cross the street and follow the small hiking path (signed) to the left.