General Characteristics

County (administration): Liberec Region
District (town): Semily
Cadastre: Harrachov
Map 1 : 50 000 (sheet No): 0323, 03233
Geological region: Lužice Pluton and Krkonoše-Jizera Massif; Krkonoše-Jizera crystalline complex
Accessibility: - passable footpath
ID : 3126

Geology

Short characteristics of the site: This locality is represented by the highest waterfall in the Czech Republic. It occurs on mountainous riverlet Mumlava, is 9.9 metres high and 10 metres wide. The basement rock is classified as coarse-grained porphyric biotite granite. Just at the base of this waterfall two giant kettle holes occur. Some other holes occur in the upper waterfall part. Water discharge is variable, in winter this waterfall changes in an ice fall.
Regional geologic unit: Bohemian Massif - crystalline complex and pre-Variscian Palaeozoic - Lugicum - Magmatites of Lugicum, Bohemian Massif - superficial deposits and post-Variscian magmatites - Quaternary - Quaternary of denudation areas of Bohemian Massif
Stratigraphy: kenozoikum - kvartér
Subject: geomorphology
Geological phenomenon: pothole
Genesis: aquatic (water activity)
Rock: granite

Territorial conservation

Level of protection: Registered interesting geological localities
Protection of a geol. phenomenon: C - Geological phenomenon is the reason for a registration in the database of CGS
Conflicts of interests: without conflicts

References

Mrázová Š., red. (2007): Základní geologická mapa České republiky 1 : 25 000 s Vysvětlivkami 1 : 25 000 03-2333 Harrachov. Česká geologická služba. Praha

Elaboration and Updating

Elaborated by: Jirková Pavlína, 10.03.09
Updated by: Vajskebrová Markéta 19.07.17, Kukal Zdeněk 08.09.17

Citation

The database Significant geological localities of the Czech Republic: 3126 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-04-25]. Available from: http:// lokality.geology.cz/3126.

Location in map: