Brough of Birsay
Visit this tidal island on this short walk on Mainland Orkney. Access to the island is via a 240m causeway across the Sound of Birsay. It is only crossable at low tide - click here for tide times. On the island you will find the remains of Pictish and Norse settlements and a modern light house.
You can extend your walking in the area by visiting the nearby Marwick Head RSPB nature reserve.