One of the Six Hills Roman burial mounds, which have Scheduled Monument status - Credit: Archant Rare Roman burial mounds of national importance could be under threat if access plans to a construction site where 64 apartments will be built get the green light, say objectors. The developer already has planning permission for an eight-storey building of 64 apartments on the car park next to Six Hills House on the corner of Six Hills Way and London Road in Stevenage. For site access, approval is now being sought to divert the existing cycle path and create a turning circle at the front.