Důl Trojice, Former coal mine in Slezská Ostrava, Czech Republic.
Důl Trojice is a former coal mine in Slezská Ostrava with preserved operational buildings made of red clinker brick arranged along Těšínská Street. The complex displays typical 19th-century mining architecture with functional structures from the region's industrial era.
This mine was founded in 1844 by Count Stanislaus Wilczek as a shallow operation before being expanded into a deep mine in 1870. It played a role in the coal development of the region for over a century.
This site was once central to community life and work in the area, shaping how people lived and organized their days. The preserved buildings stand as a reminder of the industrial past that defined this part of the region.
The buildings are viewable from the exterior and located in an accessible area of the city. It is best to visit during daylight to appreciate the brick architecture and construction details clearly.
The name refers to Trinity Sunday, the day the mine began operations and also when it closed exactly 120 years later. This rare coincidence connects the beginning and end of the mine in a symbolic way.
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