
Hardtberg is a municipal district of Bonn, Germany. It was developed from the villages Duisdorf, Hardthöhe and Lengsdorf that belonged to the Amt Duisdorf before 1969. The new housing estate Brüser Berg in the south of Hardtberg became an official locality of Bonn in 1974. Hardthöhe is location for the headquarters of the Federal Ministry of De...
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http://en.wikipedia.org/wiki/Hardtberg

Single location in the municipality of Dernau in the German growing region of Ahr. The vineyards, which face southeast to west, are located at an altitude of 125 to 260 meters above sea level and have a gradient of 10 to 60%. They comprise 22 hectares of vineyards. The soils consist of weathered greywacke with loess and loam in the lower areas...
Found on
https://glossary.wein.plus/hardtberg
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