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Besides granite, the bright red Bundtsandstein is the second typical rock in the Odenwald.
It shapes the landscape of the HInteren Odenwald as well as the Main and Neckar valleys.
It was deposited in the early trais period about 245 million years ago as sedimentary rock.
At that time all continents were united to one supercontinent, Pangaea.
At that time the Odenwald was part of a semi-desert basin surrounded by high mountains in the east, south and west.
It was remains of the 3300 million year old Variscan Mountains, built up of slates, gneisses and granites.
This basin was at times crossed by mighty river courses, which carried large amounts of weathering debris from the Varisz mountains and piled it up into a layer package several hundred metres thick.
These deposits solidified over millions of years.
As alluvial sedimentary rock, the composition and thus also the hardness of Buntsandstein varies.
This relatively easy to work stone has always been a preferred building material and was also used for sarcophagi, millstones, wayside shrines, boundary stones, fountain floors and troughs, stairs, door and window frames.