Ablach

[Danube] == Geology == During the Riss Ice age, about 120,000 years ago, the Ablach flowed into the Danube at Engelswies, because its original valley was covered by the ice. The ice blocked the Danube, and the Danube formed a lake between Geisingen and Spaichingen. When the water level of this lake reached 667 meters above mean sea level, i...
Found on http://en.wikipedia.org/wiki/Ablach_(Danube)
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