In 2010 Eyjafjallajökull eurupted. Its location is interesting, as the crater is in the middle of a polygon. It is directly south of Hekla, which is in the north corner of the same polygon. The craters of Vatnafjöll and Tindfjöll are also on that line.
The elliptical form around the crater of Eyjafjallajökull, exactly in the middle of the polygon. Hekla marks the northern corner of the polygon.
Countless examples like this one show how the convection rolls shape the surface.
I have a BS degree in geology, BA in anthropology, graduated in Chinese language and as a certified tourist guide. I provide this website about my contribution to answer the greatest question remaining about our Earth. I have analyzed the convection rolls within the Earth's mantle and how they affect the surface. This makes it possible to provide many interesting examples about geology found on my blog.
View all posts by Steingrimur Thorbjarnarson
Magic Magma 