The 2 acres low-lying narrow island, http://maps.nls.uk/geo/explore/#zoom=17&lat=51.5061&lon=-0.8704&layers=168&b=1 wooded and about 200m long, has a tennis court and internally a large fish pond which reduces its area but was excavated between 1907 and 2000 to help build up its level, being next to a broad area equipped with designated flood-meadows known as Wargrave Marsh.