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The Giant Mountains, Krkonoše, or Karkonosze (Czech: [ˈkr̩konoʃɛ] , Polish pronunciation: [karkɔˈnɔʂɛ] , German: Riesengebirge pronounced [ˈʁiːzn̩ɡəˌbɪʁɡə] ), are a mountain range located in the north of the Czech Republic and the south-west of Poland, part of the Sudetes mountain system (part of the Bohemian Massif). The Czech-Polish border, which divides the historic regions of Bohemia and Silesia, runs along the main ridge. The highest peak, Sněžka (Polish: Śnieżka), is the Czech Republic's highest natural point with an elevation of 1,603 metres (5,259 ft).
On both sides of the border, large areas of the mountains are designated national parks (Krkonoše National Park in the Czech Republic and Karkonosze National Park in Poland), and these together comprise the Krkonoše/Karkonosze Transboundary Biosphere Reserve under the UNESCO Man and the Biosphere Programme. The source of the River Elbe is within the Giant Mountains. The range has a number of major ski resorts, and is a popular destination for tourists engaging in downhill and cross-country skiing, hiking, cycling and other activities.