The difference between the temperature of the air escaping from the peak and the surrounding air sometimes reaches 16°C. The area was declared a protected area in 1951 and it covers 18.7 hectares.

Boreč massif is a morphologically perfect mound - a perfectly prepared laccolith created by sodalite trachyte, that is interwoven with a complex fissure labyrinth. In summer it acts as a thermal accumulator and in winter it is much warmer than the surrounding countryside. On the foothills of the slope you can identify openings amongst the cushions of Strawberry Begonia (Saxifraga decipiens) from which air is sucked in to be warmed up in the fissures, moisturised and then again released through the openings at the top of the hill.

When it is cold a foggy vapour is hovering above the upper openings of the fissure. In summer the flow direction changes and cold air comes out from the foothills of the scree, even in late spring you can see small icicles there. The fauna is predominantly woods, and the structure of the woods reflects the local microclimatic oddities. Some of the vertebrate species which you can see here, especially after it has been raining, include the fire salamander (Salamandra salamandra), in terms of invertebrates some molluscs and beetles have been recorded here, the most important beetle species identified being the Pterostichus negligens, which is in fact a glacial relict, a remainder from the Ice Age. Natural deciduous forests and lime, maple and ash trees prevail here. The southern slopes are covered in thermophilic oak woods and rich shrubbery. The northern slopes are covered in birch, rowan and hazel trees growing in small clumps.

This has been a protected area since 1951.

Do you like nature trails? The Boreč trail is to be found here.

Learn about other beautiful places in Lovosice and its surroundings. Click here or here:-)