Luboch, Mountain summit in Dolnośląskie Voivodeship, Poland.

Wasserkoppe (Polish: Kamiennik, Czech: Luboch) is a flat summit on the western Silesian ridge of the Karkonosze, on the Czech-Polish border. Its top lies above the tree line and is covered with granite boulders, lichens, dwarf pine and bristle grass; the Polish name Kamiennik means roughly "the stony one".

The peak was historically called Wasserkoppe in German and is now known as Kamiennik in Polish, reflecting territorial shifts in the region. This name change marks the region's transition through different periods of control and influence.

The Polish name Kamiennik means roughly "the stony one", referring to the granite boulders covering the treeless summit, where lichens grow on the rocks among dwarf pines and bristle grass. The German name Wasserkoppe relates to the wet moorland of Hala Szrenicka on the northern slope, where the Kamieńczyk stream rises at 1260 m.

No marked trail leads to the summit; only a border ridge path runs from Szrenica west to Novosvětské sedlo, and it is closed because the peak lies in Zone I of KRNAP. Hikers stay on the marked routes, such as the red trail from Szklarska Poręba past Wodospad Kamieńczyka to Schronisko na Hali Szrenickiej at about 1200 m.

Since 1 January 2021 Luboch has been the highest point in the Jablonec nad Nisou District, after Harrachov, on whose land it lies, was transferred from the Semily District by Act No. 51/2020 Sb. The flat granite-block summit lies above the tree line and carries continuous dwarf pine and grasses.