Hertfordshire Grim's Ditch: 990m long section between Crawley's Lane and Rossway Lane

Scheduled area

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History & significance

Hertfordshire Grim's Ditch is a linear defensive earthwork and scheduled ancient monument consisting of a 990-metre section of ditch and bank preserved between Crawley's Lane and Rossway Lane in Hertfordshire. The monument forms part of the broader Grim's Ditch system that extends across the county, a network of linear boundaries of Iron Age origin, likely constructed during the late Iron Age period as territorial or defensive features. The surviving section exhibits the characteristic form of a substantial ditch with accompanying bank, elements typical of such prehistoric linear works. This particular stretch contributes to the archaeological and landscape significance of the Grim's Ditch system, which remains an important indicator of Iron Age settlement patterns and land use in Hertfordshire.

Hertfordshire Grim's Ditch: 990m long section between Crawley's Lane and Rossway Lane is a scheduled monument protected by Historic England under reference 1021205. View the official record →

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