The <a href="https://da.wikipedia.org/wiki/R%C3%A5bjerg_Mile" class="extiw" title="da:Råbjerg Mile">Råbjerg Mile</a> dune in northern Jutland, Denmark
<a href="//commons.wikimedia.org/wiki/User:Heje" title="User:Heje">Heje</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>