https://en.wikipedia.org/wiki/Giant_Mountains
The cross-border hiking trail on the main ridge called "Polish–Czech Friendship Trail" was closed in the 1980s for all but Polish and Czechoslovak citizens. The mountains are on the route of main Sudetes hiking trail, Główny Szlak Sudecki (440 km from Świeradów Zdrój to Prudnik), which follows the main ridge. Today, the Giant Mountains ...