Drakonjina špilja, also known as Zmajeva pećina, is called so because of the mysterious relief of a dragon found inside. It is located immediately above Murvica, on the island of Brač, in Croatia.
The dragon was carved by unknown monk in the 15th century, when the monks lived in the caves and even built a chapel in them. As well as the dragon, there is also a carving of the moon and other ancient cult symbols. On the eastern side over the chapel, there are carved human figures and birds on their nests, indicating that this was a Christian sanctuary, which nevertheless had elements of pagan religions.
Wikipedia https://en.wikipedia.org/wiki/Drakonjina_špilja
Official Website http://www.otok-brac.info/lokacije/zmajeva_spilja.htm
More information on showcaves.com http://www.showcaves.com/english/hr/caves/Drakonina.html
Address 21420, Croatia
Coordinates 43°16'9.57" N 16°35'56.507" E