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A cache by Djurets Send Message to Owner Message this owner
Hidden : 10/31/2009
2 out of 5
2.5 out of 5

Size: Size:   other (other)

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Geocache Description:

This Is a Earth Cache , consequently there are no container here. To get a approval logg se below.

Please respect the fences on the site. You don´t need to get exactly to "ground zero". (in 2009 there was no fenses then the picture was taken).

Svartifoss (Black Fall) is a waterfall in Skaftafell National Park in Iceland, and is one of the most popular sights in the park. It is surrounded by dark lava columns, which give rise to its name.

Columnar basalt

During the cooling of a thick lava flow, contractional joints or fractures form. If a flow cools relatively rapidly, significant contraction forces build up. While a flow can shrink in the vertical dimension without fracturing, it cannot easily accommodate shrinking in the horizontal direction unless cracks form; the extensive fracture network that develops results in the formation of columns. The topology of the lateral shapes of these columns can broadly be classed as a random cellular network. These structures are often erroneously described as being predominantly hexagonal. In reality, the mean number of sides of all the columns in such a structure is indeed six (by geometrical definition), but polygons with three to twelve or more sides can be observed. Note that the size of the columns depends loosely on the rate of cooling; very rapid cooling may result in very small (<1 cm diameter) columns, while slow cooling is more likely to produce large columns.
Source: Wikipedia

Ich möchte alle deutschsprachigen bitten die gesamte Cachebeschreibung zu lesen, bevor sie die Fragen beantworten. Danke.

Feel free to upload a photo of you in front of the waterfall, it is not required but greatly appreciated!

For the valid "cache found" log:
Send to us via profile e-mail answers to these three questions:

•The name of this earth cache.
•Estimate the hight of the waterfall.
•Has the lava cooled slowly or quickly to form these culums?

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