I don't know what is a natural, or even an unnatural, fractal is so I can't help here, but nice photo Marlene great colours :) All this new stuff is too much for me. Forum has changed and people seemed to have smileys and avatars etc none of which work for me.

And every one said, 'If we only live,
We too will go to sea in a Sieve,---
To the hills of the Chankly Bore!'
Far and few, far and few, Are the lands where the Jumblies live;
Their heads are green, and their hands are blue, And they went to sea in a Sieve.

Edward Lear
http://www.nonsenselit.org/Lear/ns/jumblies.html