Educational Trail Hlinná – Kamýk
This educational trail provides information about the geological importance of one part of the Central Bohemian Uplands and its natural-historical context. The trail begins at Hlinná village and runs to Holý hill, Velké hradiště, Plešivec hill and back again.
The individual stops of the trail are marked by information panels indicating site characteristics.
The trail is 10 kilometres long and non-binding – individual stops are not in a thematic order. Visitors can decide themselves on the order of the stops, or choose just a part of the trail. Local attractions include, among others, the Holý Hill Nature Reservation.
Stops
Plešivec Natural monument
Natural monument Plešivec (509 m a.s. l.), popularly Jordán. Plešivec Hill is built of basalt rock - olivine leucite, heavily weathered at the surface and forming extensive rubble. These cover the southwestern, western and northeastern slopes and the top parts themselves. On October 14, 1966, this locality was declared a natural monument for the protection of free open rubble. Today, it covers an area of almost 33 hectares.
The main attraction of the hill are the so-called ice pits at the foot of the largest natural rubble field with very cold air in summer in which snow and ice are maintained long until spring. This is caused by the sealing of the lower parts of the rubble field by weathering, so the cold heavy air cannot escape from the tub-shaped looking parts of the rubble field until it is replaced by even colder air next winter. In the past, there was a partial extraction of the natural rubble. It is open, freely moving, without vegetation, only occasionally, old linden trees contribute to their stabilization. The grounded parts of the natural rubble are covered with deciduous forest.
Ice pits in Plešivec belong to the most famous phenomena of its kind in the Central Bohemian Uplands, but it is known from many other places, such as Borečský hil, Kamenná hůra. Below the top there is an ice well with a constant water temperature from 5 to 7 ° C.
Roháč, the largest beetle in Europe, which is an especially protected species, has found refuge in the Plešivec Natural Monument.
Photo gallery
Galerie - Plešivec Přírodní památka
