A unique mosaic of ecosystems of topmost summits (lichen tundra), grasslands and peat bogs of the summit plateaux (grassy tundra) and leeward slopes of glacial cirques of the Krkonose/Giant Mts (flower-rich tundra). It represents an unusual combination of Nordic, Central European and alpine organisms and their communities. It covers an area of 47 km2, i.e. 7.4% out of the whole area of the Krkonose/Giant Mts (32 km2 in the Czech part and 15 km2 in the Polish part of the Krkonose/Giant Mts).