Krkonoše, also known as the Giant Mountains, is a mountain range in the Sudetes, divided between Poland and the Czech Republic. Its highest peak is Sněžka, which stands on the border between the two countries at a height of 1,602 metres (5,256 ft) above sea level, making it the highest peak in the Czech Republic. The mountains are famous for their skiing resorts; they also contain the source of the River Elbe. Large areas of the mountains are preserved as national parks by both countries: the Polish Karkonosze National Park and the Czech Krkonoše National Park. In 1992 Polish and Czech parts of the range were jointly designated a transboundary biosphere reserve under UNESCO's "Man and the Biosphere" program.
The Czech name "Krkonoše" is first mentioned as "Krkonoß" on a 1518 map by Nicholas Claudianus, and in a 1517 source as "Krkonošské hory." The origin of the name is unclear. The Czech word "krk" means "neck," while "noš" is connected to a root meaning "to carry." There may be a connection with the Old Greek word "krka" (meaning "Krummholz") or with the pre-Indo-European word "Corconti," which is first listed by Ptolemy and refers to a pre-Celtic or Germanic people.
The main ridge of the mountains runs in east-west direction and forms the border between Poland and the Czech Republic. Its highest peak, Sněžka, is the highest peak of the Czech Republic. The Silesian northern part in Poland drops steeply to Jelenia Góra valley, whereas the southern Czech part slowly lowers to the Bohemian basin. In the north-east direction the Giant Mountains continue to Rudawy Janowickie, in the south-east to Rýchory . The pass Novosvětský průsmyk at Jakuszyce forms the western border to the Jizera Mountains.