General Characteristics

County (administration): Ústí nad Labem Region
District (town): Děčín
Cadastre: Hřensko
Map 1 : 50 000 (sheet No): 0223, 02232
Geological region: Czech Cretaceous Basin - Jizera Cretaceous & Cretaceous of the lower section of Labe River, Ploučnice, Kamenice and the Děčínský Sněžník Mt.
Accessibility: - passable footpath
Excursion locality: yes
ID : 20

Geology

Short characteristics of the site: Largest rock arch in the Central Europe (its heights amounts 19 m and width 26.5 m). It was formed by a selective weathering and removal of less competent parts of a rock massif. The pillar consists of quartzose sandstone of the Jizera Formation (Middle up to Upper Turonian). Remarkable locality, also touristically attractive.
Regional geologic unit: Bohemian Massif - superficial deposits and post-Variscian magmatites - Cretaceous - Czech Cretaceous Basin
Stratigraphy: mezozoikum - křída - svrchní křída - turon
Subject: geomorphology, sedimentology
Geological phenomenon: rock arch, rock, rock chimney, rock salient, cliff, rock schelter, gully, rock pillar, karren, honeycombs
Genesis: sedimentary, aeolian (wind activity), aquatic (water activity)
Rock: sandstone

Territorial conservation

Level of protection: National nature monument in National park
Additional information: See the Digital register of the Agency for Nature Conservation and Landscape Protection of the Czech Republic AOPK ČR
Protection of a geol. phenomenon: A - Protected Area (declared as Geological Locality)
Part of LEPA (Large-size especially protected areas): NP (National park) - České Švýcarsko
Conflicts of interests: tourism

References

Balatka, B. - Sládek, J. (1974): Pískovcové skalní brány v Čechách. - Ochrana přírody, 29, 1, 247-250. Praha. Valečka, J. et al. (1986): Vysvětlující text k základní geologické mapě 1 : 25 000 list 02-231 Kristin Hrádek a 02-232 Arnoltice. - MS Archiv ČGÚ Praha.

Elaboration and Updating

Elaborated by: Valečka Jaroslav, 03.11.94
Updated by: Lorencová Markéta 26.07.05, Valečka Jaroslav 11.11.08

Citation

The database Significant geological localities of the Czech Republic: 20 [online]. Prague: Czech Geological Survey, 1998 [cit. 2024-04-27]. Available from: http:// lokality.geology.cz/20.

Location in map: