Natural Castle - a photo on Flickriver

Natural Castle

            Lóndrangar are a pair of sharp and steep cliffs, or volcanic plugs of basalt, that have been hewn out from softer surrounding rock by erosion. At 75 m and 61 m respectively, they are quite a sight.

Lóndrangar are volcanic plugs left out as remnants from a bigger crater, which has since mostly eroded away with time. 

And what is a volcanic plug, and how does it form?

Also called a volcanic neck or lava neck, it is created when magma hardens within a vent on an active volcano. 

When forming, a plug can cause an extreme build-up of pressure if volatile-charged magma is trapped beneath it. This can sometimes lead to an explosive eruption. But if a plug is preserved, erosion may remove the surrounding softer rock while the erosion-resistant plug remains, producing a distinctive upstanding landform.

I like volcanoes :)

Taken in: Ísland (show map)

Taken on: September 19, 2011

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Lóndrangar

Iceland

Sea

Ocean

Magic Cloth Technique

Rocks

Rocas

Klettar

Drangar

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10 stop ND filter

Basalt

Volcanic Plug

Snæfellsnes

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Cliffs « less

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Camera: Canon EOS 500D, f/6.3, 41 sec, 18mm, ISO 200 (more info) (hide info)

Camera:	Canon EOS 500D
Lens:	EF-S18-55mm f/3.5-5.6 IS
Aperture:	f/6.3
Exposure Time:	41
Focal Length:	18mm
ISO:	200
Exposure Bias:	0 EV
Flash:	Off, Did not fire
Exposure Program:	Manual
Exposure Mode:	Manual
Metering Mode:	Multi-segment
White Balance:	Auto
Color Space:	Uncalibrated
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