Bike Touring Highlight
The Alvenslebenstollen with mouth hole at Burglahr was a robbery of the pit Louise Horhausen in the district of Altenkirchen in the Westerwald.In 1825, the tunnel was built as a burrow 40 meters below the Louisenstollen . With a propulsion of 14.6 cm per day and an average of 41 m per year, the tunnel was brought to a slope of 1.5 mm / m (0.15%) and thus built until 1864.
September 18, 2019
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