One of the last primeval forests in the Sázava River valley can be found on the steep, rocky slope above the river. Thanks to its inaccessibility this rich mixed tree forest has been growing here undisturbed for more than 150 years. Beech wood with a lot of flowers is a natural phenomenon of this place. You can see it with your own eyes early in the spring when the still bare tree tops let the light in to bring numerous spring flowers to life. At places you can spot the white fir, sycamore and linden tree among the beech trees, some of which have grown to a respectable size. Spruce also has its place here, growing mainly in the moister and shadier spots. The peace of the forest is good for animals. The fire salamander, a strikingly coloured nature jewel, lives near the stream. High in the treetops live black woodpeckers with their typical red hoods. They can easily find enough food to eat and tree hollows to live in here. There are a lot of fallen tree trunks in the forest, which makes it difficult to walk through. This, however, is no problem for the sweet marten. They skillfully manage the tree branches with their fit, lean bodies, while their brown colouring makes them inconspicuous in the dim forest light. The Ve Studeném primeval forest was established a national nature reserve as early as in 1935 for its nature treasures. Foresters have left the oldest parts of the forest to its own course, thus enabling us to observe the undisturbed natural process, to admire and study it.