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Geological Formation

Tied Island

Islands and Archipelagos

A tied island, or land-tied island, is a landform consisting of an island connected to the mainland or to another island only by a tombolo, an isthmus of beach material joined to land at both ends. St Ninian's Isle in the Shetland Islands off the north coast of Scotland is an example: once an island, it is now linked to the mainland by such a tombolo.

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