GeoGraph - photograph every grid square

Looking south over Afton Marsh towards Freshwater Bay. Afton Marsh is a nature reserve which stretches between Afton Road in the north and to within 100m of Freshwater Bay in the south. The site covers 15.3 ha of tall fen and open water habitat, with broad-leaved woodland and scrub on the upper reaches of the Western Yar. The site is on the old flood plain of the river, and was once grazing marsh. The river Yar flows northward from Freshwater Bay to Yarmouth, reaching the sea at a sluice gate on the Causeway. This closes at high tide causing the water to back up to the rustic bridge. Weirs further upstream prevent water levels rising in the south marsh.