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Naučná stezka Zlatý kůň

Acanthopygic quarry

In the old quarry there are grey acanthopygic limestones uncovered named after the trilobite Acanthopyge haueri. They belong to the younger layers of Koněprusy devonian (middle devonian, eifel stage). These limestones are beddings of a shallow tropical sea. Chipped rock areas are by pioneering species populated. The rock which is not weather-worn is first of all by lichens vegetated. One of frequent species is Lecanora muralis) whose crusty thalli can be found on limestone rocks as well as in the surroundings of human residences. After lichens come first vascular plants and mosses. The pioneering succulent species of rock apertures and little terraces is white stonecrop (Sedum album). Further follows salad burnet (Sanguisorba minor) from family rosaceae and in places with eroded soil surface redstem filaree (Erodium cicutarium) from family geraniaceae. Frequent xerophilous moss is fir tamarisk-moss (Abietinella abietina). In places with deeper soil gradually root even xerophilous woody plants to which a bush common cotoneaster (Cotoneaster integerrimus) belongs. Herb greens of the deserted quarry fit also to the invertebrates. One of flamboyant snails is an air-breathing land snail Helicella obvia who inhabits open steppe greens inclusive the secondary ones that are through human actions created. Under the stones in ant nests of family Lasius lives a tiny thermophilic ant-cricket (Myrmecophila acervorum), the smallest species of straight winged insects in czech countryside. Some hygrophilous plants find fitting conditions in smaller dips of quarry bottom, for example common sedge (Carex nigra) or blue sedge (Carex flacca) which are otherwise in the dry milieu of Český kras rather rare.

GPS position

N 49° 54.829', E 14° 4.564'



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