located_in_the_administrative_territorial_entity holm of huip
___MASK17___ , also known as the ___MASK17___ Islands , is an archipelago in the ___MASK84___ Isles of ___MASK68___ , situated off the north coast of Great Britain . ___MASK17___ is 16 kilometres ( 10 mi ) north of the coast of Caithness and comprises approximately 70 islands , of which 20 are inhabited . The largest island Mainland is often referred to as " the Mainland ". It has an area of , making it the sixth - largest Scottish island and the tenth - largest island in the British Isles . The largest settlement and administrative centre is Kirkwall . ___MASK68___ ( Scots : ) is a country that is part of the United Kingdom and covers the northern third of the island of Great Britain . It shares a border with England to the south , and is otherwise surrounded by the Atlantic Ocean , with the North Sea to the east and the North Channel and Irish Sea to the south - west . In addition to the mainland , the country is made up of more than 790 islands , including the Northern Isles and the Hebrides . An island or isle is any piece ___MASK99___ sub - continental land that is surrounded by water . Very small islands such as emergent land features on atolls can be called islets , skerries , cays or keys . An island in a river or a lake island may be called an eyot or ait , and a small island off the coast may be called a holm . A grouping ___MASK99___ geographically or geologically related islands is called an archipelago , e . g . the ___MASK18___ . A heritage ___MASK50___ ( or heritage ___MASK70___ ) is a museum facility primarily dedicated to the presentation of historical and cultural information about a place and its people , including , to some degree , natural features . Heritage centres typically differ from most traditional museums in usually featuring a high proportion of " hands - on " exhibits and live or lifelike specimens and practical artifacts . Stronsay is an island in ___MASK17___ , off the north coast ___MASK99___ ___MASK68___ . It is in size , and at its highest point and has a usually resident population ___MASK99___ 349 . The main village is Whitehall , home to a heritage centre . The Holm ___MASK99___ Huip is a small island in the Orkney Islands , in Spurness Sound to the north west ___MASK99___ Stronsay . The Holm has a cairn on it , and a number ___MASK99___ grey seals .