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Hertfordshire Grim's Ditch is a linear earthwork of Iron Age date that survives as a substantial section of defensive or boundary ditch stretching approximately 1350 metres between Kiln Road and Chesham Road in Hertfordshire. The monument comprises a ditch with associated bank, representing part of a wider system of ditches that extended across the Chiltern region during the pre-Roman Iron Age. Such linear earthworks served functions including territorial demarcation, stock control, and defensive purposes, though their precise original purpose remains debated among archaeologists. This particular section is designated as a scheduled ancient monument in recognition of its archaeological significance and potential to inform understanding of Iron Age settlement patterns and land use in the region.
Hertfordshire Grim's Ditch: 1350m long section between Kiln Road and Chesham Road is a scheduled monument protected by Historic England under reference 1021204. View the official record →
Hertfordshire Grim's Ditch is a linear earthwork of Iron Age date that survives as a substantial section of defensive or boundary ditch stretching approximately 1350 metres between Kiln Road and Chesham Road in Hertfordshire. It is designated a Scheduled Ancient Monument by Historic England (NHLE) under reference 1021204.
Hertfordshire Grim's Ditch: 1350m long section between Kiln Road and Chesham Road is a Scheduled Ancient Monument, legally protected by Historic England (NHLE) — the body responsible for designating and safeguarding heritage sites in England. The official designation reference is 1021204.
Several scheduled monuments lie within 10 km, including Hawridge Court ringwork (3.9 km), Marlin Chapel Farm moated site (3.9 km), Buckinghamshire Grim's Ditch: 1500m long section from Great Widmoor Wood to Oaken Grove (4.6 km).
This page is just one thread. A full Aubrey report pulls together 15 strands of Hertfordshire Grim's Ditch: 1350m long section between Kiln Road and Chesham Road's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Hertfordshire Grim's Ditch: 1350m long section between Kiln Road and Chesham Road stands on White Chalk Subgroup, bedrock that formed in the Maastrichtian. The rock here is chalk.