Geograph - photograph every grid square

Grassland, often used for grazing sheep, on the south side of the Afon Mawddach estuary near Barmouth bridge.
The Afon Mawddach (river Mawddach) is a tidal estuary; when there is a spring tide, or severe weather drives the tide higher inshore - this area often completely floods.
The railway track acts as a barrier between the grassland and the sand dunes in the estuary mouth.
This line is part of the Cambrian Coast Railway between Machynlleth and Pwllheli and is famous for its scenic views of both coast and mountains.
The train is seen approaching the bridge.
A footbridge is incorporated on the eastern side of the bridge and pedestrians, cyclists and motorcycles can cross the estuary by the side of the track.
Since 1996, this has formed part of the National Cycle Route that links North and South Wales