Thunder buried under the earth. In a place where the river Rostushka sinks into the rocky abyss one can see one of the most impressive natural beauties in Macedonia. Duff Waterfall is located in the gorge which is so deep and narrow that one can barely see the sky from the inside. The waterfall has a vertical drop of 28 meters, but the height is not as nearly impressive as the extraterrestrial landscape that is created from the gray rocks overgrown with green moss, which are contrasted by the black cold waters of the river and white foam which is created when the water hits the surface below. Have an adventure and reach this place on foot. It is located in one of the most beautiful national parks, “Mavrovo”.