Early 13th-century city wall tower on travertine rock in Mühlhausen.
Quaternary; precipitation from cold karst water.
Various parts of the Thuringian Basin in the state of Thuringia, central Germany.
Early 13th-century city wall tower on travertine rock in Mühlhausen.
In the late Stone Age, Thuringian travertine was used to erect menhirs (megalithic culture). In the Middle Ages, actual quarrying began in many quarries. At its most important deposits, entire medieval towns were built from it, with town walls, churches, foundation walls, and even rock cellars hewn into the natural travertine bedrock.
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Andreas Lindner inhaltundform@web.de