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I have went at country at a little town in Romania. On a garage rooftop on green steel, I founded certain misterious regular spirals whick those are similar with fractal models. Anything said those models would be created by some tiny snails. I not know yet if this is sure. I don't have high tecknology, but those models has amazing me. A 3D printer or a laser grapher is very expansive.

Those photos

Enigmistic?  ;D and where are the spirals?  ::)

I told at the begin topic, those spirals at on my garage at a residence at Brasov in Romania.
I filmed those pictures with my mobile phone.
If you want to come here at me to looking and studying those spirals, I can say the adress. But unfortunethly, those spirals maybe erased, by snow. Now at me is winter. At springs if those spirals was erased, maybe will appear new spirals.
Those pictures anyhow are keeping here on FRACTALFORUMS.

To me , they look like the crystal structure of the base metal after an acid wash
rain will do this to some metals

tin and zinc plated steal

Those fractal models can occur and on plastiks

The simmilar fractal models like in this photo was rendered on computer as curlique fractals.

Could you post bigger version of those wonderful images?

I will try now
Those pictures are curlique fractals, same spirochetes

Thanks for that! Those fractals seem to work well with some of those special numbers (pi, e, sqrt(2), etc). I've found https://scratch.mit.edu/projects/1299338/ which generated curlicue fractals based on random seeds:

(http://i.imgur.com/kqjLnaY.png)