A physical map of Bulgaria, with the Balkan mountains highlighted.
<a href="//commons.wikimedia.org/wiki/User:Ikonact" title="User:Ikonact">Ikonact</a>,  <a href="//commons.wikimedia.org/wiki/User:RosarioVanTulpe~commonswiki" title="User:RosarioVanTulpe~commonswiki">RosarioVanTulpe~commonswiki</a>, <a href="//commons.wikimedia.org/wiki/User:Rowanwindwhistler" title="User:Rowanwindwhistler">Rowanwindwhistler</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Rowanwindwhistler" title="User talk:Rowanwindwhistler">talk</a>)
CC BY-SA 4.0
<a href="//commons.wikimedia.org/wiki/File:MontesBalcanes.svg" title="File:MontesBalcanes.svg">MontesBalcanes.svg</a>