Bozkov Dolomite Caves

Karst caves.
Bozkov.

The Bozkov Dolomite Caves were discovered in 1947 during the extraction of crystalline carbonate rock on the edge of the village of Bozkov. It represents the most extensive karst system in northeastern Bohemia. Unlike other caves in the Czech Republic, this one developed in metamorphosed calcitic dolomite. The caves are 43 m deep and 1100 m long, and accessible to the public in the length of 350 m. The lens of dolomite is probably of Cambrian age and was folded within chlorite-sericite phyllites of the Železný Brod Crystalline Complex. The dolomites are strongly silicified along tiny microfractures; this induces selective weathering of carbonate rocks at the origin of very picturesque quartz ledges and ribs, locally with aggregates of acicular aragonite. Lower-positioned parts of the karst system are flooded, forming a subterranean lake – possibly the biggest karst lake in Bohemia. Issues of karst waters lie in lower parts of the valley. Occasional rock outcrops in the slopes of the Vraštilovský potok Stream display karren surfaces and sinkholes several metres in diameter.


Fotogalerie

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07_ Bozkovske dolomitove jeskyne_ foto1

 
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07_ Bozkovske dolomitove jeskyne_ foto2

 
 
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