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An isthmus is a narrow strip of land connecting two larger land areas. Of note, the Isthmus of Panama connects the continents of North and South America (the Americas), and the Isthmus of Suez in Egypt connects Africa and Asia.
Canals are are often built on isthmi where they may be particularly advantageous to create a shortcut for marine transportation. The Panama Canal bisects the Isthmus of Panama, thereby connecting the North Atlantic and Pacific Oceans; the Suez Canal adjoins the North Atlantic and Indian Oceans, cutting across the Isthmus of Suez to connect the Mediterranean Sea and the Gulf of Suez/Red Sea.
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List of examples
In North America
West Coast
- Catalina Isthmus, which divides Santa Catalina Island, California into a large eastern portion and a smaller western portion.
- Isthmus of Olympia, Washington, North America. Located at the base of Puget Sound, this isthmus connects West Olympia to East Olympia, and creates a separation between Capitol Lake and Budd Inlet, the southernmost point of Puget Sound.
- Seattle, Washington which lies between Lake Washington and Puget Sound.
Hawaii
East Coast
- Isthmus of Avalon, which connects the populous Avalon Peninsula to the rest of Newfoundland.
- Isthmus of Chignecto, which connects the Nova Scotia peninsula to the rest of Canada.
- Isthmus of Nahant connecting Nahant, Massachusetts to Massachusetts.
- Isthmus of Saint Pierre and Miquelon, which connects the island of Miquelon and Langlade Island
- Isthmus of Summerside, connecting the Western section of Prince Edward Island, Canada with the remainder of the island.
Midwest
- Madison Isthmus, between Lake Mendota and Lake Monona in Madison, Wisconsin.
Central America
- Isthmus of Panama - connects North America and South America. The Panama canal goes through this isthmus.
- Isthmus of Tehuantepec - connects Yucatan and Central America with the rest of Mexico.
In Australia
- Isthmus near Port Arthur, Tasmania, Australia
- Neck in Bruny Island, Tasmania - connects North and South Bruny.
New Zealand
- Auckland isthmus, which connects the Northland Peninsula to the rest of New Zealand's North Island.
In Europe
North Coast
- Karelian Isthmus between Gulf of Finland and Lake Ladoga, which connects Russia to Finland.
Mediterranean Sea
- Isthmus of Bolbs, which joins Gibraltar to mainland Spain.
- Isthmus of Corinth, which connects the Peloponnese peninsula to the rest of Greece.
- Isthmus of Potidea, connecting the Kassandra peninsula with the mainland of Greece.
Black Sea
- Isthmus of Perekop between Crimea and Ukraine proper.
Red Sea
- Isthmus of Suez - the isthmus between North Africa and Israeli / Palestinian Penninsula, in Egypt where the Suez Canal is located.
British Isles
- La Coupée isthmus in Sark.
- Forth-Clyde isthmus in Scotland.
- Mavis Grind isthmus in Shetland, UK.
- Tyne-Solway Isthmus in England, along the Stanegate in Roman times main forts at Corbridge and Carlisle.
Atlantic Ocean
- Isthmus of Westfjords peninsula, which connects to the mainland of Iceland.
In Asia
- Isthmus of Kra, which joins the Malay Peninsula with mainland Asia.
- Isthmus of Kushimoto in Japan - connects Honshū with Cape Shiono-Misaki.
South East Asia
- Adam's Bridge, between India and Sri Lanka (a former Isthmus).
- Quezon Province, in Luzon, Philippines - connecting Bicol peninsula with mainland Luzon.
In South America
- Isthmus of Médanos - links Venezuela to Médanos.
- Ofqui Isthmus, Aisén Region, Chile.
In Africa
See also
Wikipedia content modification information:
- This page was last modified on 30 November 2008, at 06:32.
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