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| In Deutsch |
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| In Deutsch |
Eisensteinstollen
Useful Information
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| Image: the entrance. |
History
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| 1869 | mining of iron ores. |
| 1989 | use for spelaeotherapy. |
Geology
The Eisensteinstollen is located in the limestone of the Iberg.
This limestone is a former coral reef, which grew here during the Devonian.
Intrusions of iron carbonates were weathered by the groundwater and converted
into limonite, an iron ore.
The chemical reaction produced carbon dioxide, which intensified karstification.
The tunnel is the entrance to a huge cave system of up about 6km length, which
is accessible only to cavers.
Description
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| Image: speleotherapy. |
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| Image: far end of the tunnel. |
The Eisensteinstollen (Iron ore tunnel) is a former iron mine, located
above the village Bad Grund at the slope of the Iberg.
The iron ore is connected with the iron ore mined in the
Iberger Tropfsteinhöhle
higher uphill.
The mine is used exclusively for speleotherapy, there are no guided tours.
After entering the tunnel ther is a lock, intended to reduce the air exchange
with the outside.
After 80m the therapy zone is reached.
About 50m long and three to four meters wide it offers room for about 50
patients.
See also
Iron Mine
)
