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Natural Monuments

Germany
Hesse

Darmstadt District

Rheingau-Taunus-Kreis
Niedernhausen

Hollow Stone

Discover
Places to see

Natural Monuments

Germany
Hesse

Darmstadt District

Rheingau-Taunus-Kreis
Niedernhausen

Hollow Stone

Highlight • Natural Monument

Hollow Stone

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    5.0

    (4)

    54

    runners

    1. View of the Taunus Valley – View over Lenzhahn loop from Oberjosbach

    9.10km

    00:59

    160m

    160m

    Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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    Moderate

    Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

    Hard

    Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

    Moderate

    Tips

    July 9, 2023

    The Taunus belonged to the 20th century. for several centuries one of the leading industrial areas in Germany with regard to ore mining and ore processing. The abundance of water, the abundance of forest (charcoal extraction) and finally the ore deposits in close proximity to each other predestined the Taunus for the iron industry. Today we also find numerous smaller pits and quarries not far from Oberjosbach am Nickel, at the "Alte-haag" in the Heftricher Forest or at the natural monument "Hohler Stein". On the latter, which is traversed by numerous tunnels, u. a. awarded the fields Weibertrank (iron and manganese) and Gustavshöhe (iron). In 1912 the award certificate for the lead and copper ore mine near Heftrich was awarded. During the First World War, mining in Heftrich boomed because lead was needed for armaments. At that time the sole reached down to a depth of 110 m. Annually, 230 tons of lead ore and copper pyrite were sold to the Braubach lead and silver works near Lahnstein. On June 13, 1925, the last layer entered the Hasdrubal tunnel.
    The ores did not come together with the Taunus rocks, but formed later. Under the warm, humid climate on the Cretaceous/Palaeogene boundary 65 million years ago, iron and manganese were dissolved during the profound chemical weathering of the rocks. These were later deposited again in fissures and crevices in the rock as crusts and nodules.
    However, man did not mine the first ores by mining, but by collecting ore-bearing rocks from the surface of the earth. Manganese ore, which often occurs together with iron ore, was regarded as worthless surrounding rock well into the Middle Ages and was therefore put aside. Another way of mining ores was through the creation of oval depressions in the ground, the so-called pings. These hollow forms with a diameter of approx. 1.5 m to 2 m and a depth of up to one meter can be found in large numbers at Hohle Stein.

    Translated by Google •

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      Elevation 440 m

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      Thursday 25 December

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      -6°C

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      Max wind speed: 9.0 km/h

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      Location: Niedernhausen, Rheingau-Taunus-Kreis, Darmstadt District, Hesse, Germany

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