Velké doly

Velké doly Nature Reserve is a small but ecologically valuable protected area straddling the border between Český Těšín and Třinec, in the Moravian-Silesian Region of the Czech Republic. The reserve stretches across the slope of the Olza river valley, at an elevation between 282 and 356 metres above sea level, covering a total area of 36.5 hectares. It combines the scenic appeal of a river valley landscape with the protection of one of the more valuable remaining forest fragments in the area.

What does the reserve protect?

The main conservation focus of Velké doly is an oak-hornbeam forest (known regionally as "grąd"), a species-rich deciduous forest type dominated by oak and hornbeam, typical of fertile lowland and foothill areas across Central Europe. Forests of this kind are known for their rich understory vegetation and varied age structure of the tree stand, making them among the more biodiverse forest habitats in the region. Notably, in interwar-period Polish-language nature and regional literature, this same forested area was referred to as "Koński Las" (Horse Forest) — a name that was used among residents of the Polish-Czech borderland in the Cieszyn Silesia region even before the area received formal reserve status.

Where exactly is the reserve located?

Velké doly lies within the territory of two towns: Český Těšín and Třinec. Its geographic coordinates are approximately 49.7153°N, 18.6346°E. Because the reserve sits on the slope of the Olza valley, the terrain varies considerably — from lower sections closer to the river to higher stretches further up the hillside — which in turn shapes the microclimate and habitat conditions found within the forest.

Why is Velké doly worth visiting?

For anyone interested in the natural heritage of the Polish-Czech borderland, Velké doly is a good example of how a small, well-preserved forest fragment can survive close to towns with an industrial history, as both Třinec and Český Těšín have. The proximity of the Olza river adds landscape value to the site — for centuries, the river has served as both a natural boundary and a communication corridor through the Cieszyn Silesia region.

The name "Velké doly" translates literally to "great valleys," which corresponds well with the terrain on which the reserve is situated. The historical name "Koński Las," used by Polish-language authors during the interwar period, shows that the area has long been a recognisable landmark for local residents on both sides of the border.

Frequently asked questions

How large is the Velké doly nature reserve? The reserve covers an area of 36.5 hectares.

At what elevation is the reserve located? It stretches across an elevation range of 282 to 356 metres above sea level, on the slope of the Olza river valley.

What does the Velké doly reserve protect? It protects an oak-hornbeam forest, a species-rich deciduous forest dominated by oak and hornbeam trees.

Where is the reserve located? It lies in the Moravian-Silesian Region of the Czech Republic, within the territory of Český Těšín and Třinec.

Where does the name "Koński Las" come from? This is how the forested area was referred to in interwar-period Polish-language literature — a name used by local residents even before the site was formally designated a nature reserve.