Folded serpentinite, near Geierjoch, Tuxer Alps, Austria (detail 30cm × 20cm)
Hermann Hammer (<a href="//commons.wikimedia.org/wiki/User:Haneburger" title="User:Haneburger">User:Haneburger</a>)
2012-08-19
<span class="int-own-work" lang="en">Own work</span>