Couple days before official Red Bull Cliff Diving World Series competition in Mostar (Bosnia and Herzegovina), Orlando Duque, the greatest high diver in the world, and Rhiannan Iffland, also a high diver and the winner of Red Bull Cliff Diving World Series 2017, visited together Una National Park in Bihać, Bosnia and Herzegovina, and took couple of jumps from the biggest waterfall in National Park called Štrbački buk, 25 high waterfall with beautiful scenery and untouched nature.