Klemen Bečan did the hardest route in the cave of Osp
Klemen Bečan managed the hardest FA in the Osp cave, the route now called Waterworld, graded 9a with its 55 meters length and more than 30 meters of overhang. A true masterpiece! The route consists of two parts: in the first 20 meter part, which is totally horizontal and is done in 30 moves you can find 2 boulder problems around FB7c and the second very beautiful part with climbing up the collonetes for another 30-35 meters of 8a-8b endurance.
For more info about Klemen check his blog: here