HU3368 : Geology Wall at Mavis Grind

taken 3 years ago, near to Islesburgh, Shetland Islands, Great Britain

Geology Wall at Mavis Grind
Geology Wall at Mavis Grind
Northmavine has some of Shetland’s best geodiversity and some of the UK’s oldest rocks. This wall has been constructed to demonstrate this geodiversity using rocks from Northmavine. All three major rock types are represented – igneous rocks that were originally liquid lava or magma; sedimentary rocks formed from compressed layers of sand and mud; and metamorphic rocks that have been altered by enormous pressure and heat. This has given rise to rocks of different colours and textures from which this wall has been made.
Mavis Grind

Mavis Grind is a narrow strip of land (isthmus), barely 100 foot wide at its narrowest point, which separates the Atlantic Ocean from the North Sea and also joins a large chunk of the north-west mainland to the rest of mainland Shetland. Without it, there would be at least one more Shetland Island.

Researchers believe the Vikings moved their boats across land in order to avoid the hazardous journey round the tip of mainland Shetland (LinkExternal link BBC News). The name Mavis Grind derives from the Old Norse: Mæfeiðs grind or the Norwegian Mæveiðs grind meaning "gate of the narrow isthmus".

Since then, various cargoes have made the crossing but the route is probably best known as “a boat draa” where mariners avoided the long and, at times dangerous, journey around north mainland by hauling their vessel overland instead. The crossing was used regularly until the 1950s.

An information board at the site claims that “Mavis Grind is possibly the only place in the United Kingdom where you can stand at the side of the Atlantic Ocean and throw a stone overland into the North Sea”. I did not try this (not least because if the stone fell short, it could hit any passing traffic on the A970 which crosses the isthmus).

Creative Commons Licence [Some Rights Reserved]   © Copyright David Dixon and licensed for reuse under this Creative Commons Licence.
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HU3368, 31 images   (more nearby search)
Photographer
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Date Taken
Sunday, 23 September, 2018   (more nearby)
Submitted
Saturday, 29 September, 2018
Geographical Context
Coastal  Geological interest 
Camera (from Tags)
Panasonic DC-G9 
Subject Location
OSGB36: geotagged! HU 339 683 [100m precision]
WGS84: 60:23.8743N 1:23.1343W
Camera Location
OSGB36: geotagged! HU 339 683
View Direction
Northwest (about 315 degrees)
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Other Tags
Inlet  Atlantic Ocean  Shetland  Bay  Hills  Geology Wall  Igneous Rock  Sedimentary Rock  Metamorphic Rocks 

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Image Type (about): geograph 
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