In the 1970s, this monumental reservoir with azure-clear water flooded the historic mining town of Přísečnice, and today it is surrounded by rugged, treeless plains. Bicycle Route No. 23 runs directly along the northern and western shores of the reservoir on a perfect, completely flat paved path where cars are prohibited. Since this is a protected water supply zone, access to the water itself is prohibited, but you can take photos and enjoy the scenery right from your bike seat, looking over the roadside railing.