The Black Bog is the largest surviving bog in Ukraine’s Volcanic Carpathians. It contains the largest peat deposit of all of the Ukrainian Carpathians, up to six metres deep in the thickest part. The Site has a rich diversity of plants; it provides habitat to 67 different species, and is the only place in the region that contains five different species of sphagnum moss, two of which are very rare in Central Europe. The Site supports the spawning of rare amphibians, such as the nationally vulnerable Carpathian newt (Lissotriton montadoni), fire salamander (Salamandra salamandra) and yellow-bellied toad (Bombina variegata). In 2015, a successful restoration project was carried out to mitigate the potential threats to the Bog, which include fire, a low water table, poor vegetation recovery and decreasing numbers of rare species.