Rokytnice nad Jizerou

Čerťák is a ski jumping stadium with two hills in Harrachov in the Czech Republic. It was built in 1979 and both hill officially opened in 1980. The venue is most notable for being one of five ski flying hills in the world, though it also has three smaller hills close by. It is owned by the sports club TJ Jiskra Harrachov. Audience capacity is about 50,000. Despite being a flying hill, only two world records have ever set at Čerťák, both in the 1980s. It was also during this time, and into the early 1990s, that many horrific accidents occurred.

Harrachov (Czech pronunciation: [ˈɦaraxof]; German: Harrachsdorf) is a town in Jablonec nad Nisou District in the Liberec Region of the Czech Republic, close to the border with Poland. It has about 1,400 inhabitants. It is known for its ski resort.

Paseky nad Jizerou is a municipality and village in Semily District in the Liberec Region of the Czech Republic. It has about 300 inhabitants.

Jestřabí v Krkonoších is a municipality and village in Semily District in the Liberec Region of the Czech Republic. It has about 300 inhabitants.

Vysoké nad Jizerou (German: Hochstadt an der Iser) is a town in Semily District in the Liberec Region of the Czech Republic. It has about 1,400 inhabitants.

Szrenica (1,362 m a.s.l.; Czech: Jínonoš, German: Reifträger) is a mountain peak situated in the western part of Giant Mountains in Poland, very close to the Polish-Czech border, within the Karkonosze National Park. Its name originates from the Polish word szron (frost). There is a weather station situated close to the summit. The peak is deforested, both the southern and the northern parts are used intensively for skiing. The elevation gain compared to the main range is approximately 60 m.

Kořenov (German: Bad Wurzelsdorf) is a municipality and village in Jablonec nad Nisou District in the Liberec Region of the Czech Republic. It has about 1,000 inhabitants. It lies in the Jizera Mountains.

Vítkovice (German: Witkowitz) is a municipality and village in Semily District in the Liberec Region of the Czech Republic. It has about 400 inhabitants.

Zlatá Olešnice is a municipality and village in Jablonec nad Nisou District in the Liberec Region of the Czech Republic. It has about 500 inhabitants.

Roztoky u Semil is a municipality and village in Semily District in the Liberec Region of the Czech Republic. It has about 100 inhabitants.

Łabski Szczyt or Violík (in Polish and Czech) (German: Veilchenstein) is a mountain peak located in the western Giant Mountains on the Czech-Polish border. The source of the Elbe River, one of Europe's major rivers, is situated on the southern (Czech) slopes of the mountain.