Štola sv. Jan Křtitel u Michalových Hor
General Characteristics
County (administration):
Plzeňský kraj
District (town):
Tachov
Village:
Chodová Planá
Cadastre:
Michalovy Hory
Map sheets:
11-41 Mariánské Lázně, 11-413 Chodová Planá
Accessibility:
no traffic restriction ( by car)
ID:
4468
Geology
Short characteristics of the site:
The former St. John the Baptist adit (also known as the Silver adit II) is one of the most important and extensive mining works in the historical ore district of Michalovy Hory. Michalovy Hory was known primarily for the mining of silver and lead (galena). The district experienced its greatest prosperity in the 16th century, when around 20 mines operated there. The decline occurred after the Thirty Years' War and the definitive end of mining activity in this area came in the first half of the 19th century. The St. John the Baptist adit was a multi-storey work that was connected underground to other mines in the district. It was allegedly once accessible to neighboring adit (e.g. Štěpán Šlik), which enabled extensive drainage and transport within the entire district. The heaps near the adit are still sought by mineralogists for the occurrence of rare secondary minerals, such as picropharmacolite or pyromorphite.
Regional geologic unit:
Bohemian Massif > Bohemicum > Mariánské Lázně complex
Stratigraphy:
Proterozoic
Subject:
mining and mining impacts, history
Geological phenomenon:
ore mineralization
Genesis:
hydrothermal mineralization
Rock:
gneiss, amphibolite
Territorial protection
Level of protection:
Registred geological localities suggested to protection in Protected landscape area
Part of LEPA (Large-size especially protected areas):
Slavkovský les
Part of national geopark:
Egeria
Conflicts of interests:
without conflicts
References
- Kůrková I., Žáček V., Landa D.-A., Rozkošný I., Vylita T (2026): Slavkovský les, zrození vody z kamene. Česká geologická služba, Praha.
- Sejkora J., Kopecký S., Pauliš P., Kopecký S. jun. (2015) Ni-Sb mineralizace z rudního revíru Michalovy Hory (Česká republika). Bull. mineral.-petrolog. Odd. Nár. Muz (Praha) 23, 2, 129-146.
Elaboration and Updating
Elaborated by:
Ivan Rozkošný, 29.12.2025
Updated by:
Citation
The database Important geological localities of the Czech Republic: 4468 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/4468.
Location in map:
Assessment
Scientifical assesment:
great
Educational assesment:
middle
Significance:
supraregional
Representativeness:
middle
Geological importance:
Excursion locality:
yes
Locality conditions:
acceptable
You can send information about a change in the status of the site to lokality@geology.cz
