{"geometry":{"type":"MultiPolygon","coordinates":[[[[-0.298545,52.935116],[-0.297898,52.935809],[-0.297474,52.93621],[-0.297176,52.936509],[-0.29713,52.93655],[-0.296995,52.936617],[-0.296861,52.936656],[-0.296677,52.936695],[-0.291677,52.937438],[-0.292175,52.937654],[-0.292329,52.9377],[-0.292388,52.937697],[-0.296551,52.937132],[-0.297248,52.93701],[-0.297464,52.936955],[-0.297499,52.936937],[-0.297632,52.936807],[-0.298805,52.935633],[-0.298976,52.935415],[-0.299046,52.93526],[-0.299033,52.93523],[-0.298999,52.935212],[-0.298592,52.93511],[-0.298567,52.935108],[-0.298545,52.935116]]]]},"type":"Feature","properties":{"entry-date":"2026-04-30","start-date":"","end-date":"","entity":13900290,"name":"Car Dyke, Roman canal at Helpringham","dataset":"scheduled-monument","typology":"geography","reference":"1004946","prefix":"scheduled-monument","organisation-entity":"16","quality":"authoritative","documentation-url":"https://historicengland.org.uk/listing/the-list/list-entry/1004946"}}