{"geometry":{"type":"MultiPolygon","coordinates":[[[[-2.546343,51.20661],[-2.546159,51.206797],[-2.546442,51.206813],[-2.546587,51.206859],[-2.546629,51.206854],[-2.546926,51.206757],[-2.54747,51.206606],[-2.547601,51.2066],[-2.547626,51.206605],[-2.547653,51.206622],[-2.547778,51.206525],[-2.547825,51.206507],[-2.547932,51.20649],[-2.547981,51.206457],[-2.548072,51.206416],[-2.548315,51.206285],[-2.548312,51.206276],[-2.548292,51.206274],[-2.548267,51.206249],[-2.548234,51.206185],[-2.54811,51.206201],[-2.547941,51.206196],[-2.547818,51.206182],[-2.547616,51.206143],[-2.547116,51.205815],[-2.547049,51.205715],[-2.547025,51.205613],[-2.54702,51.205508],[-2.546993,51.205517],[-2.546982,51.205531],[-2.546908,51.205788],[-2.546858,51.205928],[-2.54679,51.206092],[-2.546734,51.206195],[-2.546666,51.20629],[-2.546549,51.206428],[-2.546343,51.20661]]]]},"type":"Feature","properties":{"entry-date":"2026-06-11","start-date":"","end-date":"","entity":14500879,"name":"Windsor Hill Marsh SSSI","dataset":"site-of-special-scientific-interest","typology":"geography","reference":"1001243","prefix":"site-of-special-scientific-interest","organisation-entity":501910,"quality":"authoritative"}}