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Silex nodules

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Silex nodules

Hiking

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  • Location: Wartau, Werdenberg, St. Gallen, Eastern Switzerland, Switzerland

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    April 15, 2025

    Hiking

    The boulders between Gauschla and Alvier on the Palfries terrace were broken off from the overlying rock face by weathering. They consist of limestone with circular and nodular flint inclusions, which were formed by slow recrystallization. This rock dates back to the Early Cretaceous period and was formed in the ancient Tethys Sea.

    Sediments of shells and skeletal fragments of marine life were transformed into limestone over time, forming flint nodules. The Alps were later uplifted from the sea, and weathering brought these boulders to the surface. These flint nodules can be found along the hiking trail.
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    4.8

    (38)

    180

    hikers

    #1.

    Palfries cable car – View of Alvier loop from Gauschla

    7.13km

    02:15

    210m

    210m

    Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

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    Moderate
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    Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

    Moderate
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    Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

    Moderate

    Details

    Informations

    Elevation 1,780 m

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    Friday 3 July

    27°C

    17°C

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    Max wind speed: 14.0 km/h

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    Location: Wartau, Werdenberg, St. Gallen, Eastern Switzerland, Switzerland

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