Plešivec or Ledový vrch (also called Jordán) is a volcanic basalt hill about 4 km northwest of the town of Litoměřice in the České středohoří Protected Landscape Area.
The main attraction of the hill are the so-called ice pits at the foot of the largest rubble field, in which snow and ice stay long until spring and there is very cold air comming out in summer. This is due to the airtightness of the lower parts of the rubble field by certain type of rock, so that cold heavy air cannot escape from the resulting tub-shaped structures of these parts of the rubble field until it is replaced by even colder air next winter. In the past, there was a partial extraction of rubble. Only couple of old linden trees stand on and hold together the ruble fields. The more earth-rich parts of the rubble are covered with deciduous forest.
Ice pits in Plešivec are among the most famous phenomena of their kind in the Bohemian Central Mountains, but they are a phenomenon known from many other places, such as Borečský vrch or Kamenná hůra. Below the peak there is an ice well with a constant water temperature from 5 to 7 ° C. In the territory of the Plešivec Natural Monument, the common stag beetle, the largest beetle in Europe, which is a specially protected species, has found refuge.
In the top part of Plešivec there is also a lookout point that offers a beautiful view of the panorama of the Bohemian Central Mountains. The ascent to Plešivec can be taken as part of a trip along the Hlinná – Kamýk Nature Trail.