SARAJEVO, BOSNIA AND HERZEGOVINA – JUNE 27: Riders with their horses and traditional clothes are seen as they start out from Horse Square to Prusac town to take part in a central ceremony as part of the 508th ‘Days of Ajvatovica’ celebrations on Sunday, July 1, in Sarajevo, Bosnia and Herzegovina on June 27, 2018. Ajvatovica is Bosnia and Herzegovina’s Islamic traditional, religious and cultural event named after Ajvaz Dede who was a devout Muslim working to illuminate the population and achieve progress in the area.