That's fresh snow there on top of those symbiotic life-forms.<br>lichen
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/26084283@N00">Marie Richie</a> from Portland, Cascadia
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/26084283@N00/5027547">Flickr</a>