Danube Sinkhole

The Danube Sinkhole (Donauversinkung or Donauversickerung) is an incipient underground stream capture in the Upper Danube Nature Park. Between Immendingen and Möhringen and also near Fridingen (Tuttlingen), the water of the Danube sinks into the riverbed in various places. The main sinkhole is next to a field named Brühl between Immendingen and ...
Found on http://en.wikipedia.org/wiki/Danube_Sinkhole
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