In the Khust district of Transcarpathian region, on the territory of the Zacharovanyi Krai National Nature Park, there is the Zacharovana Dolyna Nature Reserve, which includes two natural sites of national importance: the Smerekovyi Kamen tract near the village of Ilnytsia on the southern slopes of Buzhera Mountain in the upper reaches of Smerekovyi Stream, and the unique sphagnum bog Black Mud (sphagnum is a bog moss that forms peat). The most original rock massif in Ukraine is called the Enchanted Valley. The outcrops of the bedrock here have created high cliffs in the shape of fantastic creatures. Weathering has polished these figures from light grey calcite. With a little imagination, the stone giants turn into pyramids or people, dragon fangs or castle ruins. The majestic 20-metre-high Spruce Stone is the guardian of this miracle.