Border markings of an easy (“blue”) ski piste at the <a href="//commons.wikimedia.org/wiki/Kronplatz" title="Kronplatz">Kronplatz</a> southern mountainside (Italy, South Tyrol).
<a href="//commons.wikimedia.org/wiki/User:Zefram" title="User:Zefram">Zefram</a>
CC BY 2.0 de
<span class="int-own-work">Self-photographed</span>