{
  "version": "0.1.0",
  "data_cutoff": "2026-09-30",
  "last_updated": "2026-09-30",
  "title": "Cambridgeshire Development Archaeology Evidence Atlas",
  "scope": "Audited public ADS Library record metadata for Cambridgeshire; a discovery layer, not a CHER extract or archaeological risk map.",
  "sources": [
    {
      "source_id": "ads-library-records",
      "publisher": "Archaeology Data Service",
      "dataset_or_page": "ADS Library record pages",
      "source_url": "https://archaeologydataservice.ac.uk/library/",
      "retrieval_date": "2026-09-30",
      "geographic_coverage": "Selected public report metadata for Cambridgeshire, England",
      "licence": "Record-level licence retained in every derived row",
      "permitted_reuse": "This atlas links to public bibliographic metadata and source pages only. It does not redistribute report PDFs or claim a blanket reuse licence for all ADS records. Reuse of a source record remains subject to its displayed licence and the ADS access terms.",
      "limitations": "This is a deliberately audited seed catalogue, not a complete ADS, OASIS or Cambridgeshire HER extract. Direct automated retrieval from the source domain returned 403 during the build, so records were constrained to pages independently visible in public discovery results and manually checked against their public snippets."
    },
    {
      "source_id": "cambridgeshire-her-context",
      "publisher": "Cambridgeshire County Council",
      "dataset_or_page": "Cambridgeshire Historic Environment Record guidance",
      "source_url": "https://www.cambridgeshire.gov.uk/residents/libraries-leisure-culture/archaeology/cambridgeshire-historic-environment-record-cher",
      "retrieval_date": "2026-09-30",
      "geographic_coverage": "Cambridgeshire",
      "licence": "Not incorporated as a dataset in this release",
      "permitted_reuse": "Referenced as an authoritative research source only; no HER records are copied, bulk-harvested or redistributed.",
      "limitations": "The atlas is not a substitute for a CHER search, planning advice or site-specific assessment."
    }
  ],
  "records": [
    {
      "source_record_id": "1190563",
      "title": "Archaeological investigations at Downham Road, Ely, Cambridgeshire. Archive Report",
      "source_url": "https://archaeologydataservice.ac.uk/library/browse/issue.xhtml?recordId=1190563",
      "doi": "https://doi.org/10.5284/1091726",
      "investigation_year": 2016,
      "publication_year": 2019,
      "organisation": "Cambridge Archaeological Unit",
      "investigation_type": "Excavation",
      "site_name": "Downham Road",
      "place": "Ely",
      "parish": "Ely",
      "district": "East Cambridgeshire",
      "easting": 553198,
      "northing": 281500,
      "periods": [
        "Late Bronze Age",
        "Iron Age",
        "Roman",
        "Middle Saxon",
        "Post-medieval"
      ],
      "source_licence": "ADS Terms of Use and Access",
      "source_system": "ADS Library / OASIS",
      "id": "ads-library-1190563",
      "county": "Cambridgeshire",
      "coordinate_source": "published-grid-reference",
      "location_confidence": "published-grid-reference"
    },
    {
      "source_record_id": "1166646",
      "title": "Report on Archaeological Field Walking Survey at Angle Farm, Soham, Cambridgeshire",
      "source_url": "https://archaeologydataservice.ac.uk/library/browse/issue.xhtml?recordId=1166646",
      "doi": "https://doi.org/10.5284/1053442",
      "investigation_year": 2015,
      "publication_year": 2015,
      "organisation": "Archaeology Cambridgeshire East",
      "investigation_type": "Systematic fieldwalking survey",
      "site_name": "Angle Farm, Great Drove",
      "place": "Soham",
      "parish": "Soham",
      "district": "East Cambridgeshire",
      "easting": 557780,
      "northing": 272540,
      "periods": [
        "Later prehistoric",
        "Medieval",
        "Post-medieval"
      ],
      "source_licence": "Creative Commons Attribution 4.0 International",
      "source_system": "ADS Library / OASIS",
      "id": "ads-library-1166646",
      "county": "Cambridgeshire",
      "coordinate_source": "published-grid-reference",
      "location_confidence": "published-grid-reference"
    },
    {
      "source_record_id": "1158965",
      "title": "Park Farm, Madingley, Cambridgeshire: Archaeological Recording Of Ground Works.",
      "source_url": "https://archaeologydataservice.ac.uk/library/browse/issue.xhtml?recordId=1158965",
      "doi": "https://doi.org/10.5284/1047436",
      "investigation_year": null,
      "publication_year": 2011,
      "organisation": "Cambridge Archaeological Unit",
      "investigation_type": "Archaeological recording",
      "site_name": "Land at Park Farm",
      "place": "Madingley",
      "parish": "Madingley",
      "district": "South Cambridgeshire",
      "easting": 538490,
      "northing": 260190,
      "periods": [],
      "source_licence": "ADS Terms of Use and Access",
      "source_system": "ADS Library / OASIS",
      "id": "ads-library-1158965",
      "county": "Cambridgeshire",
      "coordinate_source": "published-grid-reference",
      "location_confidence": "published-grid-reference"
    },
    {
      "source_record_id": "1242376",
      "title": "Archaeological Evaluation Report: The Lamb Yard, 73 High Street, West Wratting, Cambridgeshire",
      "source_url": "https://archaeologydataservice.ac.uk/library/browse/issue.xhtml?recordId=1242376",
      "doi": "https://doi.org/10.5284/1132678",
      "investigation_year": 2024,
      "publication_year": 2024,
      "organisation": "KDK Archaeology Ltd",
      "investigation_type": "Evaluation",
      "site_name": "The Lamb Yard, 73 High Street",
      "place": "West Wratting",
      "parish": "West Wratting",
      "district": "South Cambridgeshire",
      "easting": 560345,
      "northing": 252252,
      "periods": [
        "Early medieval"
      ],
      "source_licence": "ADS Terms of Use and Access",
      "source_system": "ADS Library / OASIS",
      "id": "ads-library-1242376",
      "county": "Cambridgeshire",
      "coordinate_source": "published-grid-reference",
      "location_confidence": "published-grid-reference"
    },
    {
      "source_record_id": "1186370",
      "title": "Archaeological Excavation on land at Foundry Way, March, Cambridgeshire",
      "source_url": "https://archaeologydataservice.ac.uk/library/browse/issue.xhtml?recordId=1186370",
      "doi": "https://doi.org/10.5284/1088389",
      "investigation_year": null,
      "publication_year": 2015,
      "organisation": "Archaeological Project Services",
      "investigation_type": "Excavation",
      "site_name": "Land at Foundry Way",
      "place": "March",
      "parish": "March",
      "district": "Fenland",
      "easting": null,
      "northing": null,
      "periods": [
        "Late Iron Age",
        "Roman"
      ],
      "source_licence": "ADS Terms of Use and Access",
      "source_system": "ADS Library / OASIS",
      "id": "ads-library-1186370",
      "county": "Cambridgeshire",
      "coordinate_source": "none",
      "location_confidence": "unmapped"
    },
    {
      "source_record_id": "1148070",
      "title": "Archaeological Evaluation at Library site 266 Broadway Yaxley",
      "source_url": "https://archaeologydataservice.ac.uk/library/browse/issue.xhtml?recordId=1148070",
      "doi": null,
      "investigation_year": 2012,
      "publication_year": 2012,
      "organisation": "Oxford Archaeology (Cambridge)",
      "investigation_type": "Evaluation",
      "site_name": "Library site, 266 Broadway",
      "place": "Yaxley",
      "parish": "Yaxley",
      "district": "Huntingdonshire",
      "easting": null,
      "northing": null,
      "periods": [
        "Late Iron Age"
      ],
      "source_licence": "No record-level reuse licence confirmed in this release",
      "source_system": "ADS Library",
      "id": "ads-library-1148070",
      "county": "Cambridgeshire",
      "coordinate_source": "none",
      "location_confidence": "unmapped"
    },
    {
      "source_record_id": "1203166",
      "title": "Land North of Hightown Drove, Burwell, Cambridgeshire - Solar Energy Scheme An Archaeological Evaluation",
      "source_url": "https://archaeologydataservice.ac.uk/library/browse/issue.xhtml?recordId=1203166",
      "doi": "https://doi.org/10.5284/1102942",
      "investigation_year": 2022,
      "publication_year": 2022,
      "organisation": "Cambridge Archaeological Unit",
      "investigation_type": "Evaluation",
      "site_name": "Land North of Hightown Drove",
      "place": "Burwell",
      "parish": "Burwell",
      "district": "East Cambridgeshire",
      "easting": null,
      "northing": null,
      "periods": [],
      "source_licence": "ADS Terms of Use and Access",
      "source_system": "ADS Library / OASIS",
      "id": "ads-library-1203166",
      "county": "Cambridgeshire",
      "coordinate_source": "none",
      "location_confidence": "unmapped"
    },
    {
      "source_record_id": "1156800",
      "title": "Land north of the Broadway, Yaxley, Cambridgeshire: an archaeological desk-based assessment",
      "source_url": "https://archaeologydataservice.ac.uk/library/browse/issue.xhtml?recordId=1156800",
      "doi": null,
      "investigation_year": null,
      "publication_year": 2002,
      "organisation": "Birmingham Archaeology",
      "investigation_type": "Desk-based assessment",
      "site_name": "Land north of the Broadway",
      "place": "Yaxley",
      "parish": "Yaxley",
      "district": "Huntingdonshire",
      "easting": null,
      "northing": null,
      "periods": [
        "Iron Age",
        "Roman",
        "Medieval"
      ],
      "source_licence": "ADS Terms of Use and Access",
      "source_system": "ADS Library",
      "id": "ads-library-1156800",
      "county": "Cambridgeshire",
      "coordinate_source": "none",
      "location_confidence": "unmapped"
    },
    {
      "source_record_id": "1125874",
      "title": "Land East of Moorfield Road and South of the A505, Duxford, Cambridgeshire: Archaeological Excavation. Post-Excavation Assessment",
      "source_url": "https://archaeologydataservice.ac.uk/library/browse/issue.xhtml?recordId=1125874",
      "doi": "https://doi.org/10.5284/1027724",
      "investigation_year": 2014,
      "publication_year": 2014,
      "organisation": "Pre-Construct Archaeology Limited",
      "investigation_type": "Excavation",
      "site_name": "Land East of Moorfield Road and South of the A505",
      "place": "Duxford",
      "parish": "Duxford",
      "district": "South Cambridgeshire",
      "easting": 548100,
      "northing": 247000,
      "periods": [
        "Roman"
      ],
      "source_licence": "ADS Terms of Use and Access",
      "source_system": "ADS Library / OASIS",
      "id": "ads-library-1125874",
      "county": "Cambridgeshire",
      "coordinate_source": "published-grid-reference",
      "location_confidence": "published-grid-reference"
    },
    {
      "source_record_id": "1125314",
      "title": "Dernford Farm, Sawston, Cambridgeshire. An Archaeological Desk-Based Assessment and Archaeological Investigation (fieldwalking and geophysical survey)",
      "source_url": "https://archaeologydataservice.ac.uk/library/browse/issue.xhtml?recordId=1125314",
      "doi": "https://doi.org/10.5284/1027027",
      "investigation_year": 2003,
      "publication_year": 2004,
      "organisation": "Archaeological Solutions Ltd",
      "investigation_type": "Desk-based assessment and survey",
      "site_name": "Dernford Farm",
      "place": "Sawston",
      "parish": "Sawston",
      "district": "South Cambridgeshire",
      "easting": null,
      "northing": null,
      "periods": [
        "Early medieval",
        "Medieval"
      ],
      "source_licence": "ADS Terms of Use and Access",
      "source_system": "ADS Library / OASIS",
      "id": "ads-library-1125314",
      "county": "Cambridgeshire",
      "coordinate_source": "none",
      "location_confidence": "unmapped"
    },
    {
      "source_record_id": "1100834",
      "title": "The Toilyard, Kirtling, Cambridgeshire: An Archaeological Evaluation",
      "source_url": "https://archaeologydataservice.ac.uk/library/browse/issue.xhtml?recordId=1100834",
      "doi": "https://doi.org/10.5284/1002992",
      "investigation_year": 2008,
      "publication_year": 2008,
      "organisation": "Cambridge Archaeological Unit",
      "investigation_type": "Evaluation",
      "site_name": "The Toilyard",
      "place": "Kirtling",
      "parish": "Kirtling",
      "district": "East Cambridgeshire",
      "easting": null,
      "northing": null,
      "periods": [
        "Post-medieval"
      ],
      "source_licence": "ADS Terms of Use and Access",
      "source_system": "ADS Library / OASIS",
      "id": "ads-library-1100834",
      "county": "Cambridgeshire",
      "coordinate_source": "none",
      "location_confidence": "unmapped"
    }
  ],
  "statistics": {
    "record_count": 11,
    "mapped_count": 5,
    "unmapped_count": 6,
    "mapped_percent": 45.5,
    "earliest_publication_year": 2002,
    "latest_publication_year": 2024,
    "by_investigation_type": [
      {
        "label": "Evaluation",
        "count": 4
      },
      {
        "label": "Excavation",
        "count": 3
      },
      {
        "label": "Archaeological recording",
        "count": 1
      },
      {
        "label": "Desk-based assessment",
        "count": 1
      },
      {
        "label": "Desk-based assessment and survey",
        "count": 1
      },
      {
        "label": "Systematic fieldwalking survey",
        "count": 1
      }
    ],
    "by_district": [
      {
        "label": "East Cambridgeshire",
        "count": 4
      },
      {
        "label": "South Cambridgeshire",
        "count": 4
      },
      {
        "label": "Huntingdonshire",
        "count": 2
      },
      {
        "label": "Fenland",
        "count": 1
      }
    ],
    "by_organisation": [
      {
        "label": "Cambridge Archaeological Unit",
        "count": 4
      },
      {
        "label": "Archaeological Project Services",
        "count": 1
      },
      {
        "label": "Archaeological Solutions Ltd",
        "count": 1
      },
      {
        "label": "Archaeology Cambridgeshire East",
        "count": 1
      },
      {
        "label": "Birmingham Archaeology",
        "count": 1
      },
      {
        "label": "KDK Archaeology Ltd",
        "count": 1
      },
      {
        "label": "Oxford Archaeology (Cambridge)",
        "count": 1
      },
      {
        "label": "Pre-Construct Archaeology Limited",
        "count": 1
      }
    ],
    "by_publication_year": [
      {
        "label": "2015",
        "count": 2
      },
      {
        "label": "2002",
        "count": 1
      },
      {
        "label": "2004",
        "count": 1
      },
      {
        "label": "2008",
        "count": 1
      },
      {
        "label": "2011",
        "count": 1
      },
      {
        "label": "2012",
        "count": 1
      },
      {
        "label": "2014",
        "count": 1
      },
      {
        "label": "2019",
        "count": 1
      },
      {
        "label": "2022",
        "count": 1
      },
      {
        "label": "2024",
        "count": 1
      }
    ],
    "by_location_confidence": [
      {
        "label": "unmapped",
        "count": 6
      },
      {
        "label": "published-grid-reference",
        "count": 5
      }
    ],
    "by_period": [
      {
        "label": "Roman",
        "count": 4
      },
      {
        "label": "Medieval",
        "count": 3
      },
      {
        "label": "Post-medieval",
        "count": 3
      },
      {
        "label": "Early medieval",
        "count": 2
      },
      {
        "label": "Iron Age",
        "count": 2
      },
      {
        "label": "Late Iron Age",
        "count": 2
      },
      {
        "label": "Late Bronze Age",
        "count": 1
      },
      {
        "label": "Later prehistoric",
        "count": 1
      },
      {
        "label": "Middle Saxon",
        "count": 1
      }
    ],
    "missing_metadata": [
      {
        "field": "Grid reference",
        "count": 6
      },
      {
        "field": "Investigation year",
        "count": 3
      },
      {
        "field": "Archaeological period",
        "count": 2
      },
      {
        "field": "DOI",
        "count": 2
      }
    ]
  }
}