Earth and Environment Atlas

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Geological Formations

Isthmus

Erosional and Karst Formations

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An isthmus is a narrow strip of land that connects two larger landmasses across an expanse of water that would otherwise separate them. A tombolo is a particular kind of isthmus formed from a spit or bar, while a strait is considered the sea's counterpart to an isthmus, a narrow stretch of water connecting two larger bodies of water rather than two bodies of land.

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