glacial black lake cerne jezero, sumava mountains, south bohemian region, czech republic

areas black blue bohemia bohemian cerne country countryside czech devils forest forestry geography glacial glacier hills hilly interest jezero lake landform landmark landscape mountains natural nature nobody outdoor place pond protected recreation region republic reservation reservoir ruda rural scenes scenic showplace sights south southern spicak spring springtime sumava summer tourism touristic travel travelling trips unique vacations vegetation water wilderness wood zelezna