Eynhallow Sound
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Eynhallow Sound is a seaway lying between Mainland Orkney and the island of Rousay in the Orkney Islands, Scotland. The tidal indraught is "scarcely felt beyond a line joining Costa Head and the Reef of Quendale". An Iron Age broch, Gurness, has a strategic outlook over the Eynhallow Sound.
See also
59°07′52″N 3°04′34″W/59.131°N 3.076°W/ 59.131; -3.076