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date (to: Members of the Bavarian Society for Underwater Archaeology are conducting a study of 5,000-year-old man-made stone piles submerged in Lake Constance, an alpine lake that borders Germany, Austria and Switzerland. One of the piles between Lindau and Wasserburg has so far been dated to between 3500 and 3200 BC during the Neolithic period, however, the purpose of the monuments is speculated.  ampproject.org ART Vancouver) | |||
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