Mumlavský waterfall is one of the most famous and probably also the most remarkable natural attractions in the vicinity of Harrachov in the Giant Mountains. Mumlavský waterfall (German Mummelfall) is less than 10 meters high waterfall, which is located about 2 km from Harrachov. From a hydrological point of view, it is one of the largest waterfalls in the Czech Republic and thanks to that it is considered one of the most beautiful and most sought-after waterfalls in the Czech Republic. Another interesting feature of the waterfall are the so-called giant pots and boilers, locally called "Devil's Eyes", of which there are several on the river. The largest of these depressions, created by erosion, i.e. the rotational movement of water in the Mumlava riverbed, reaches an average of up to 6 meters and a depth of 3 meters.