The subject is patterns in the eroded sandstone stacks at Caplie Caves, on
the coast of Fife between Anstruther and Crail: Shifting sands, frozen in
place for millions of years, but now once again being eroded away by wind
and wave.

The picture was taken with an Olympus E-1, with the standard 14-54mm lens.
The only manipulation was a slight crop then resize.