11. The Austrian general tried to gain a bridgehead across the Aare River at D�ttingen. 12. By 1241 the Alt-Bubenberg Castle was built on the hills above the Aare river . 13. The municipality stretches from the south-east edge of Belpberg mountain to the Aare river . 14. Brienzwiler is located on both sides of the Aare River . 15. In 1909-12 a hydroelectric power plant was built on the Aare river near Kallnach. 16. The region around the Aare river was inhabited at least as early as the mesolithic. 17. The municipality is located in the Zofingen district, along a bend in the Aare river . 18. Both villages were periodically flooded by the Aare river . 19. The roads and fields around the village were often damaged when the Aare river flooded. 20. It limits the risk of flooding, particularly in the areas covered by the Aare River .
