mountainside sculpture of spiral of seven big rock-like blocks, each balanced on the one below
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/14069557@N03">Manolo Gómez</a> from Madrid, Spain
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/14069557@N03/2359384174/">Sin vértigo</a>