The wooded hills east of the Lech in the 6th Century AD have been settled by the Alamanni. Among the early medieval villages in the Bavarian border area is one of the old Tegisinga-Dasing east of Augsburg. In January 1993, below the old town during excavation of a huge underground car-park (11 290 square meters) sharpened wooden posts were excavated in depth of 4,50 m, beneath medieval river beds ; because of roman pottery finds, the remains initially were held for a Roman bridge. Millstone and buckets of water wheels soon showed that these were three water mills that were built on the old river meanders.
The oldest water mill dates from Roman times (dendrodated in the years 102/113) with a pair of basalt-millstone around 500 km away from the Mayen area. The mill has probably existed only briefy in Trajan and soon disappeared again. 600 years later the best preserved water mill was build in the Merovingian period. About 500 piles of the well preserved water mill could be dated using dendrochronology as well. Tree-ring series began in the winter of 696/697 AD with river regulation works and the construction of a weir. Building construction began in the year 744 ; 780 there was a major renewal and reconstruction. One year after the overthrow of Duke Tassilo III. last repairs on sup-porting posts were made in April/May 789. Little later, the mill fell victim to a flood disaster and was buried under more than a meter of sand and gravel.Via http://www.canal-u.tv/video/musee_archeologique_du_jura/roman_and_early_medieval_watermills_along_the_river_paar_at_dasing_bavaria_bull_southern_germany_wolfgand_czysz_bayer_landesamt_fur_denkmalpflege_praktische_denkmalpflege_archaologische_denkmaler.8855