Eroded sandstone at <a href="https://en.wikipedia.org/wiki/Melnik,_Bulgaria" class="extiw" title="en:Melnik, Bulgaria">Melnik</a>, province of Blagoevgrad (aka: "Pirin Macedonia"), southwestern Bulgaria.
Original uploader was <a href="https://pl.wikipedia.org/wiki/User:Scythian" class="extiw" title="pl:User:Scythian">Scythian</a> at <a class="external text" href="https://pl.wikipedia.org">pl.wikipedia</a>
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