Natural geometry

Nature’s pentagons, originally uploaded by jjn1.

I’ve always wanted to see the Giant’s Causeway in Co Antrim, and yesterday finally achieved that ambition. It’s a remarkable geological phenomenon, 40,000 interlocked basalt columns which were the product of an ancient volcanic eruption. We got there at the end of the day, as the sun was setting, and it was quite magical — and almost deserted, despite being one of UNESCO’s World Heritage Sites. I had expected only hexagons, but in this stretch the columns seemed to be mainly pentagonal in cross-section. And the light was wonderful. We ran into another photographer who was similarly transported by it.

Larger image here.