Plešivec or also Ledový vrch (also popularly called Jordán) is a volcanic basalt pile about 4 km northwest of Litoměřice in the Czech Central Highlands Protected Landscape Area.
The main attraction of the hill is the so-called ice pits at the foot of the largest debris field, which keep snow and ice long into the spring and in summer the air is very cold. This is due to the sealing of the lower parts of the debris field by weathering, so that the cold heavy air cannot escape from the tub-like shape of these parts of the debris field until it is replaced by colder air next winter. In the past, there has been partial debris removal. These are open, free-moving, and devoid of vegetation, with only sporadic contributions to their stabilisation from ancient lime trees. The earthen parts of the debris are covered with deciduous forest.
Ice pits on Plešivec are one of the most famous phenomena of this kind in the Bohemian Central Highlands, but it is a phenomenon known from many other places, e.g. Borečský vrch or Kamenná hůra. Below the peak there is an ice well with a permanent water temperature of 5 to 7 °C. The Plešivec Natural Monument is home to the hornbill, Europe's largest beetle, which is a specially protected species.
In the upper part of Plešivec there is also a lookout point which offers a beautiful view of the panorama of the Bohemian Central Highlands. The climb to Plešivec can be included in a trip along the Hlinná-Kamýk Nature Trail.