Lysá hora, Mountain summit in Liberec Region, Czech Republic.

Kahler Berg, known in Czech as Lysá hora, is a rounded summit with a flattened top in the western Krkonoše, reaching 1344 m between Plešivec and Kotel. Its peak is covered with dwarf pine and open patches of subalpine mat-grass with protected mountain flora, while spruce forests grow lower down. The highest point lies in the quiet zone of KRNAP and is closed to the public; a chairlift from Rokytnice nad Jizerou runs in winter to 1310 m, about 200 m below the top.

The mountain lies in the western part of the Krkonoše range near the Polish border, between Kotel (1435 m) and Plešivec (1210 m). The chalet Dvoračky on its southwestern slope was founded in 1707 and is the oldest and best-known baude of the Rokytnice ski area. A chairlift from Rokytnice nad Jizerou has its top station at 1310 m, 200 m below the summit, and runs only in winter.

The German name Kahler Berg means "bare mountain", referring to the treeless summit covered in dwarf pine. On the southwestern slope lies the Rokytnice–Horní domky ski centre with its mountain huts; the Dvoračky hut, founded in 1707, is the oldest and best known of them.

The summit itself lies in Zone I of the Krkonoše National Park and no marked trail crosses it, so access to the highest point is forbidden. A chairlift from Rokytnice nad Jizerou runs only in winter to an upper station at 1310 m, about 200 m west of the summit, where a marked cross-country ski trail begins.

The summit lies in Zone I of Krkonoše National Park and is closed to the public; no marked trail crosses it. A chairlift from Rokytnice nad Jizerou, running only in winter, ends at 1310 m, about 200 m west of the geodetic point on the top.