The Aachtopf is Germany`s biggest natural spring, producing an average of 8,500 litres per second. Production varies seasonally and in response to the weather, but the spring never runs dry. The Aachtopf is a karst spring which is located south of the western end of the Swabian Jura, near the town Aach. The name Aachtopf is compounded from Aach (....
Found on http://en.wikipedia.org/wiki/Aachtopf
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