The Uvac River doubles back on itself so tightly that some of its bends swing through nearly 270 degrees before the water finds a way on. Those loops are sunk 200 to 300 metres into limestone walls, 350 metres at the highest, and you cannot make out the pattern at all from water level. It exists only from the clifftops. Three hydroelectric dams built between 1960 and 1979 drowned the gorge floor, so the water threading the bends today lies still and deep green rather than running. The climb to Molitva, the best-known lookout at 1,247 metres, takes about 45 minutes of steep, shadeless walking and opens the whole panorama at once.
The reserve's other headline nearly vanished. Griffon vultures were down to seven birds here in the 1970s. A feeding station opened at Manastirina in 1994 and has put carcasses out for them ever since, and the colony has climbed back to roughly 110 nesting pairs and close to 500 birds, the largest in the Balkans. They nest on ledges below the clifftops, so from the viewpoints you look down onto their backs as they ride warm air out of the canyon on 2.8 metres of wing. Boats from Nova Varoš run the bends at water level and stop at the Ledena Pećina ice cave, one chamber of the 6,185-metre Ušak system, the third-longest in Serbia. Southwestern Serbia has protected the gorge as a Special Nature Reserve since 1971, and in 2008 Serbians voted it one of the country's seven natural wonders. Nests are off-limits, drones are banned, and the wardens enforce it.