Geological stack

A geological stack is a coastal landform, a large vertical column of rock in the sea.

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  Phuket, Thailand

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  Meoto Iwa (the wedded rocks), Mie Prefecture, Japan

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  Meoto Iwa

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  Island Archway, Victoria, Australia

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  Reynisdrangar, Iceland

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  Arched Rock, California

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  In Vietnam

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  At Faroe Islands

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  Tall Rock in Ponza Island, Italy

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  Dorset

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  Flowerpot Island, Georgian Bay, Ontario

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  Flowerpot Island

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  Twelve Apostles, Australia

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  Twelve Apostles, Australia

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  Am Buachaille, Sutherland, Scotland

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  Old Man of Hoy, Scotland

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  Ball's Pyramid, Australia, is the tallest volcanic stack in the world.

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  Volcanic stack, part of the Motu islets near Easter Island, Chile

Lange Anna, Heligoland

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