Abstract Photographs

One area that I am particularly interested in, I am not sure if it has a "name" or not, is real photographs that form an abstract image. Below is an example of one of my images.

This is a shot of a sandstone formation taken on the Greek Island on Lemnos earlier this year, it is the abstract shape of the orange rock formation against the blue sky background that I find particularly interesting.

I will be looking through my images and will attempt to post up some other examples of what I am trying to explain.