Scheduled monument

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

Field	Value	Fact links
Reference	1021205	Facts
Prefix	scheduled-monument	Facts
Name	Hertfordshire Grim's Ditch: 990m long section between Crawley's Lane and Rossway Lane	Facts
Dataset	Scheduled monument	no fact link
Organisation	Historic England	no fact link
Start date	1929-02-20	no fact link
End date		no fact link
Entry date	2004-02-24	Facts
Typology	geography	no fact link
Geometry	MULTIPOLYGON (((-0.616009 51.771567, -0.615966 51.771737, -0.618475 51.772438, -0.618765 51.772543, -0.619205 51.772592, -0.619431 51.772641, -0.620575 51.772932, -0.622916 51.773509, -0.623317 51.773585, -0.624035 51.77379, -0.624504 51.773904, -0.624773 51.773986, -0.625275 51.774111, -0.625869 51.774348, -0.628387 51.775525, -0.628486 51.775486, -0.628664 51.775455, -0.628752 51.775456, -0.628802 51.775429, -0.627579 51.77479, -0.626138 51.774222, -0.625616 51.774026, -0.625188 51.773893, -0.622584 51.773228, -0.62195 51.773084, -0.619104 51.772342, -0.618971 51.772293, -0.618671 51.772147, -0.617749 51.771871, -0.616842 51.771634, -0.616036 51.77147, -0.616009 51.771567))) MULTIPOLYGON (((-0.616009 51.771567, -0.615966 51.771737, -0.618475 51.772438, -0.618765 51.772543, -0.619205 51.772592, -0.619431 51.772641, -0.620575 51.772932, -0.622916 51.773509, -0.623317 51.773585, -0.624035 51.77379, -0.624504 51.773904, -0.624773 51.773986, -0.625275 51.774111, -0.625869 51.774348, -0.628387 51.775525, -0.628486 51.775486, -0.628664 51.775455, -0.628752 51.775456, -0.628802 51.775429, -0.627579 51.77479, -0.626138 51.774222, -0.625616 51.774026, -0.625188 51.773893, -0.622584 51.773228, -0.62195 51.773084, -0.619104 51.772342, -0.618971 51.772293, -0.618671 51.772147, -0.617749 51.771871, -0.616842 51.771634, -0.616036 51.77147, -0.616009 51.771567)))	Facts
Point	`POINT (-0.622115 51.773285)`	Facts
Documentation url	https://historicengland.org.uk/listing/the-list/list-entry/1021205	Facts

{
    "reference": "1021205",
    "prefix": "scheduled-monument",
    "name": "Hertfordshire Grim's Ditch: 990m long section between Crawley's Lane and Rossway Lane",
    "dataset": "scheduled-monument",
    "organisation-entity": "16",
    "start-date": "1929-02-20",
    "end-date": "",
    "entry-date": "2004-02-24",
    "typology": "geography",
    "geometry": "MULTIPOLYGON (((-0.616009 51.771567, -0.615966 51.771737, -0.618475 51.772438, -0.618765 51.772543, -0.619205 51.772592, -0.619431 51.772641, -0.620575 51.772932, -0.622916 51.773509, -0.623317 51.773585, -0.624035 51.77379, -0.624504 51.773904, -0.624773 51.773986, -0.625275 51.774111, -0.625869 51.774348, -0.628387 51.775525, -0.628486 51.775486, -0.628664 51.775455, -0.628752 51.775456, -0.628802 51.775429, -0.627579 51.77479, -0.626138 51.774222, -0.625616 51.774026, -0.625188 51.773893, -0.622584 51.773228, -0.62195 51.773084, -0.619104 51.772342, -0.618971 51.772293, -0.618671 51.772147, -0.617749 51.771871, -0.616842 51.771634, -0.616036 51.77147, -0.616009 51.771567)))",
    "point": "POINT (-0.622115 51.773285)",
    "entity": 13919364,
    "documentation-url": "https://historicengland.org.uk/listing/the-list/list-entry/1021205"
}

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© Historic England 2025. Contains Ordnance Survey data © Crown copyright and database right 2025. The Historic England GIS Data contained in this material was obtained on [date]. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

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