{"geometry":{"type":"MultiPolygon","coordinates":[[[[0.146299,51.587388],[0.146316,51.58755],[0.146363,51.587821],[0.146339,51.587844],[0.145608,51.587935],[0.145253,51.587956],[0.145183,51.587937],[0.145163,51.587904],[0.145101,51.587612],[0.144917,51.587523],[0.144857,51.587457],[0.144931,51.587224],[0.144609,51.587196],[0.142563,51.58706],[0.142557,51.587107],[0.141538,51.587092],[0.141595,51.586851],[0.141658,51.586846],[0.141666,51.586782],[0.142392,51.586791],[0.143247,51.586856],[0.145096,51.587073],[0.145123,51.587065],[0.145139,51.58705],[0.145013,51.586433],[0.145008,51.586394],[0.14503,51.586375],[0.145393,51.586352],[0.146093,51.586339],[0.14613,51.586344],[0.146145,51.586357],[0.14625,51.587202],[0.146264,51.587258],[0.146288,51.587299],[0.146299,51.587388]]]]},"type":"Feature","properties":{"entry-date":"2024-10-17","start-date":"","end-date":"","entity":7500688,"name":"Chadwell Heath Anti-Aircraft Gun Site, Marks Gate","dataset":"heritage-at-risk","typology":"geography","reference":"3450","prefix":"heritage-at-risk","organisation-entity":16,"quality":"authoritative","documentation-url":"https://historicengland.org.uk/advice/heritage-at-risk/search-register/list-entry/2528"}}