Mumlava waterfall is less than 10 meters tall waterfall located in the Liberec region , Semily district in the Czech Republic, about 2 km from Harrachov. It is a natural attraction, which is located in the protection zone of the Giant Mountains National Park . From the hydrological point of view, it is one of the most massive waterfalls in the Czech Republic, making it one of the most beautiful and tourists of the most sought-after waterfalls in Bohemia. The waterfall is the so-called giant pots and boilers, also known as the Devil's Eye, which are several of the streams. The largest of them reaches an average of up to 6 meters and a depth of 3 meters. Surrounding the waterfall is rich in typical forest flora and fauna. Access to the waterfall is possible on the asphalt road directly from Harrachov to the blue tourist sign.