出典:Wikipedia
出典:『Wikipedia』 (2011/06/01 19:29 UTC 版)
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.