Donau-Ries north there is the Nördlinger Ries, a huge depression, which is in fact an ancient impact crater, caused by a meteorite some 14.8 million years ago. Donau-Ries Donau-Ries ("Danube-Ries") is a "Landkreis" (district) in Swabia, Bavaria, Germany. It is bounded by (from the north and clockwise) the districts of Ansbach, Weißenburg-Gunzenhausen, Eichstätt, Neuburg-Schrobenhausen, Aichach-Friedberg, Augsburg and Dillingen, and by the state of Baden-Württemberg (districts of Heidenheim and Ostalbkreis). From Palaeolithic times on the Nördlinger Ries was a very attractive site for human settlement. The valley of the Danube was abounding with game, and many caves in the slopes of the
Donau City a few years, an urban centre with residential and office buildings, research facilities, recreational facilities and event locations, the Donau City. The Donau City development concept is a broad mix of uses: office and commercial uses, up to 70 percent, residential use of about 20 percent, and cultural and recreational use of approximately 10 percent. Approximately 7,500 people currently live and work in this new "city within a city". With the overall expansion, which is expected to be completed in 2012, the population could increase to 15,000. International companies such as IBM, sanofi-aventis and Bauholding Strabag SE are also located