The Ostroh Ecological Corridor Valley is a unique natural area within the Dermansko-Ostrozkyi National Nature Park, renowned for its remarkable biodiversity and harmonious landscapes. It is one of the most valuable natural regions of Volyn-Podillia and an important refuge for wildlife and rare plant communities.
Thanks to its geographical location, the valley lies at the junction of several physical and geographical regions, forming a natural transition zone – an ecotone –between the Polissia and the Forest-Steppe. Here, the flat, forested landscapes of Polissia gradually give way to the rolling hills of the Volyn and Podillia Uplands, creating an exceptionally diverse and picturesque landscape.
Within a relatively small area, visitors can find an impressive mosaic of forest ecosystems, including oak, hornbeam-oak, pine, ash, and black alder forests, as well as rare beech, rocky oak, and spruce communities that are uncommon in the lowlands of Ukraine. This extraordinary diversity makes the valley one of the region’s most significant botanical areas.
One of its botanical highlights is the Bushcha Mire, one of the easternmost examples of Europe’s rare calcareous fens. These wetlands are considered “living relics” of ancient ecosystems that have survived for thousands of years.
The valley is home to numerous rare plant species listed in the Red Data Book of Ukraine, including common butterwort (Pinguicula vulgaris), marsh helleborine (Epipactis palustris), burnt orchid (Neotinea ustulata), perennial swertia (Swertia perennis), and many others.
Another remarkable feature of the valley is the presence of glacial relict plants – species that have survived since the last Ice Age. Among them are the martagon lily (Lilium martagon), common snowdrop (Galanthus nivalis), red helleborine (Cephalanthera rubra), large white helleborine (Cephalanthera damasonium), lady’s slipper orchid (Cypripedium calceolus), Siberian ligularia (Ligularia sibirica), and many more. Altogether, dozens of protected plant species have been recorded here, making the Ostroh Ecological Corridor Valley one of Ukraine’s most valuable sites for nature conservation.
The valley is equally important from a historical and cultural perspective. It has been inhabited since ancient times, and archaeologists have discovered sites dating from the Bronze Age through the Early Slavic period. The area is also associated with events of Ukraine’s more recent history, adding another layer to its cultural significance.
Today, the valley contains a network of protected areas, including nature reserves, protected forest tracts, geological monuments, and hydrological sites. Together, they form an integrated conservation system that safeguards the region’s unique ecosystems and helps maintain ecological balance.
The Ostroh Ecological Corridor Valley also serves an essential ecological role as a natural wildlife corridor connecting larger protected areas. This allows animals to migrate freely and supports the continuity of natural ecological processes, making the valley significant not only for Ukraine but for Europe as a whole.
Today, the valley attracts hikers, researchers, photographers, and everyone who appreciates unspoiled nature. A walk through its forests, wetlands, and rolling hills offers a rare sense of tranquillity and connection with the natural world, while every trail reveals new landscapes and unexpected discoveries.