Patterns that you can't deny: Pingo and more

So after a conversation with my cousin Dre about patterns he pointed me onto the path of some rather cool things.

Ever heard of a pingo? i cant remember if that was also the name of that penguin kids show (completely unrelated)
http://www.doodlecat.com/uploaded_images/pingo1-769397.jpg
Perhaps not the best picture
but the process of how pingo is made is the iced water forms in a pond covered with earth. These pingos only occur in rather cold places, or permafrost environments. Anyways so as a result of the climate getting water the ice has melted causing the ground to form craters. Now that was my rather basic explanation of pingos here's a more correct link to clarify things : http://en.wikipedia.org/wiki/Pingo

Also brought to my attention was Irelands The Giant's Causeway
http://www.discovernorthernireland.com/Ireland-s-First-World-Heritage-Site-A1011

Ice Wedge Polygons http://sis.agr.gc.ca/cansis/taxa/landscape/ground/nwt.html

Lake Uyuni, Bolivia - naturally formed hexagons
http://www.flickr.com/photos/jfravn/2219305734/

ooo and monguls which form from the forces of skiers on slopes and the paths that they just seem to follow