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South Ronaldsay and Burray are easy of access, being linked to Orkney mainland by roads over the Churchill Barriers - a series of causeways originally built to defend the navy base at Scapa Flow from attack from the east.
South Ronaldsay is the larger island, its attractive stone-built capital St Margaret's Hope served by car ferries from Gil's Bay on the Scottish mainland (there is also a passenger ferry to Brough from John o' Groats in summer). Walks here vary from sandy beaches and explorations of the Scapa Flow defences from World War Two, to a fine clifftop walk taking in much of the eastern coastline. Burray is a much smaller island; from here you can explore Hunda - linked by a concrete causeway - or visit the celebrated Italian chapel on Lamb Holm - connected by the Churchill barriers.