Aggertalhöhle, Show cave in Engelskirchen, Germany.
Aggertalhöhle is a show cave in Engelskirchen with about 1,000 meters of accessible passages through limestone. The passages and chambers contain mineral deposits that have built up over thousands of years.
The cave was first documented in 1819 and opened to the public in 1930. During World War II it served as an air raid shelter.
A narrow passage here is called Pastorengang, named after a clergyman who got stuck in this tight section. Local names like this show how people made sense of the cave through their own experiences.
The cave stays cool and damp inside, so bring appropriate clothing. Access is by guided tour, lasting around 45 minutes to explore the passages.
Aragonite crystals form here because of high magnesium content in the dolomitic limestone. This same chemistry has preserved fossils from an ancient tropical reef that once existed here.
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