Before revision: External links English Heritage Monument Class Descriptions The Victorian Barrow Diggers of Wales Location Tumuli of Grimde Tienen Comprehensive Database of Archaeological Site Reports in Japan Heritage Quest, research project using LiDAR data ]
After revision: Llewellynn Jewitt (1870),Grave-mounds and Their Contents,London: Groombridge and Sons.External links English Heritage Monument Class Descriptions The Victorian Barrow Diggers of Wales Location Tumuli of Grimde Tienen Comprehensive Database of Archaeological Site Reports in Japan Heritage Quest, research project using LiDAR data ]