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Switzerland
Graubünden
Prättigau/Davos
Seewis im Prättigau

Tufa Spring

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Tufa Spring

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    1. Waterfall on the Old Road – View of the Rhine Valley loop from Landquart

    36.8km

    03:26

    1,200m

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    Expert mountain bike ride. Very good fitness required. Advanced riding skills necessary.

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    Expert mountain bike ride. Very good fitness required. Advanced riding skills necessary.

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    Intermediate mountain bike ride. Good fitness required. Advanced riding skills necessary.

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    June 11, 2019

    Source Tuff

    The product of an interaction of limestone, water and carbon dioxide.

    Limestone is extremely slightly soluble in pure water. In carbon dioxide-containing water, the solubility of lime increases greatly.

    In the pores of humus soil, the carbon dioxide content is particularly high due to biodegradation processes.

    When rain seeps into humus-rich soil over limestone, it absorbs a lot of carbon dioxide. In the underlying cracked limestone then quickly creates a lime-rich solution.

    Where such lime-rich water exits as a source, this water releases dissolved carbon dioxide into the environment. In addition, water also evaporates. Both lead to the elimination of dissolved lime. Plant pads are slowly covered with a lime crust - they petrify. This explains the coarse-pored structure of the tuff.

    Tufa is easy to work with, which is why it used to be a building material in the past.

    Translated by Google •

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      Elevation 1,570 m

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      Location: Seewis im Prättigau, Prättigau/Davos, Graubünden, Switzerland

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