Landscape and Geology
During the Stone Age Klim Bjerg was an island in the Littorina Sea, along with other higher lying areas in the districts of Han Herred and Thy in northern Jutland. Today, the highest point on Klim Bjerg is 31 meters above sea level.
The subsurface consists of chalk, also called limestone and consists of deposits from the cretaceous period (Lower Danien). The steep sea cliffs at Bulbjerg are one of the places in northern Jutland where the limestone is visible at the surface. The limestone formations are approximately 65 million years old and are made of the skeletal remains of millions of one-celled animals called bryozoans. Fossils are abundant in the limestone, including many sea urchins.
Below the parking lot there is a large limestone quarry, where, for centuries people used to gather lime to build houses. The lime kiln (chalk oven) south of Klim Bjerg was used to burn chalk into mortar. Around the year 1900 there were 5 lime kilns in the village of Klim.
In the Stone Age the area around Klim Bjerg used to be seabed in the Littorina Sea. Over millennia the seabed was overlaid with deposits of sand and gravel. Once the seabed was exposed because of land uplift the sand formed many coastal and inland dune formations, including some of Denmark’s largest parabolic dunes (U-shaped), one of which is located north of Klim Bjerg.
In spring, you can see the migration of birds of prey, especially of buzzards, where large flocks gather on their migratory routes. The Scandinavian buzzard migrates through Denmark to their breeding grounds further north.
Buzzards make use of the thermal winds to ascend up to high altitudes without using significant energy and then glide through to the next ascending air flow.
The buzzard is Denmark’s most common and most widespread bird of prey.
Because of the nutrient-rich, chalky soil Klim Bjerg contains an unusually diverse flora. An area on the southern side of the slope is now a preserved area in order to protect the rare plant species, Spanish Catchfly.
In spring the sight of many flowering Small Pasque Flower can be seen on the sun-exposed slopes west and south of Klim Bjerg. Other flowering plants in the area include Spiked Speedwell, Maiden Pink, One-flowered Wintergreen and Common Bugloss.
The primary tree species in the woods are Common Beech, Silver Fir, Norway Spruce, European Larch, Scots Pine and Lodgepole Pine. In 2012 new tree species will be planted: Yew, Wild Service Tree, Sycamore Maple, Large- leaved Lime and Pedunculate Oak.