straight lines vs. nature

We construct many things. We use straight lines.
In contrast, a tree or plant will grow in it own shape.

I want to contrast man made lines in construction with lines and curves made by nature.

The lines have to be in direct contrast and need to make another 'third' image!




Please feel free to post your images and / or invite images using the following lines:

Start:

Nature has its own rules of drawing lines!

You are invited to post your image in <a href="http://www.flickr.com/groups/lines/">straight lines vs. nature</a>

:End