Section of linear earthwork on Seamer Moor Hill


Heritage Category: Scheduled Monument

List Entry Number: 1008135

Date first listed: 05-Aug-1933

Date of most recent amendment: 09-Aug-1994


Ordnance survey map of Section of linear earthwork on Seamer Moor Hill
© Crown Copyright and database right 2018. All rights reserved. Ordnance Survey Licence number 100024900.
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The above map is for quick reference purposes only and may not be to scale. For a copy of the full scale map, please see the attached PDF - 1008135 .pdf

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This copy shows the entry on 19-Nov-2018 at 13:14:53.


The building or site itself may lie within the boundary of more than one authority.

County: North Yorkshire

District: Scarborough (District Authority)

County: North Yorkshire

District: Scarborough (District Authority)

Parish: Seamer

National Grid Reference: TA 01625 86677


Legacy Record - This information may be included in the List Entry Details.

Reasons for Designation

Cross dykes are substantial linear earthworks typically between 0.2km and 1km long and comprising one or more ditches arranged beside and parallel to one or more banks. They generally occur in upland situations, running across ridges and spurs. They are recognised as earthworks or as cropmarks on aerial photographs, or as combinations of both. The evidence of excavation and analogy with associated monuments demonstrates that their construction spans the millennium from the Middle Bronze Age, although they may have been re-used later. Current information favours the view that they were used as territorial boundary markers, probably demarcating land allotment within communities, although they may also have been used as trackways, cattle droveways or defensive earthworks. Cross dykes are one of the few monument types which illustrate how land was divided up in the prehistoric period. They are of considerable importance for any analysis of settlement and land use in the Bronze Age. Very few have survived to the present day and hence all well- preserved examples are considered to be of national importance.

This linear earthwork survives reasonably well. Although affected by landscaping at the wireless station, the course of a track and tree-planting, the monument remains visible as an earthwork feature. Together with other cross dykes in the immediate vicinity it will contribute to an understanding of prehistoric land division in the area.


Legacy Record - This information may be included in the List Entry Details.


The monument includes a section of linear earthwork, a member of a wider group of similar monuments in this area of the North Yorkshire moors. The monument comprises a central earthen bank up to 1.5m high and 10m wide flanked by ditches up to 1m deep and 7m wide. These ditches are flanked by external earthen banks 0.3m high and 5m wide. The best preserved section of this earthwork is situated in the woods immediately to the south of the boundary with the wireless station. An unmetalled track crosses the earthwork in the woods.

MAP EXTRACT The site of the monument is shown on the attached map extract. It includes a 2 metre boundary around the archaeological features, considered to be essential for the monument's support and preservation.


The contents of this record have been generated from a legacy data system.

Legacy System number: 23835

Legacy System: RSM


9160, North Yorkshire SMR,

End of official listing