Stadtallendorf is a town in the district of Marburg-Biedenkopf, Hesse, Germany. It lies about east of Marburg. In 2010, the town hosted the 50th Hessentag state festival. Geography Location Under the German system of Naturräume, Stadtallendorf lies in the West Hesse Depression zone (westhessische Senkenzone) which is divided into basins and ridges. With respect to these, the town lies on the Upper Hesse Ridge which separates the Amöneburg Basin in the west from the Schwalmbecken (another basin) in the east. On this ridge may also be found the Neustadt Saddle, abutted by the town's northeast edge. This upland is part of the divide between the Rhine and Weser watersheds. Neighbouring communities Stadtallendorf borders in the north on the town of Rauschenberg (Marburg-Biedenkopf) and the community of Gilserberg (Schwalm-Eder-Kreis), in the east on the town of Neustadt, in the southeast on the town of Kirtorf, in the south on the town of Homberg (Ohm) (both in the Vogelsbergkreis), and in the west on the towns of Amöneburg and Kirchhain (both in Marburg-Biedenkopf). Constituent communities (Ortsteile) Niederklein Schweinsberg (an der Ohm) Erksdorf – This village of 1,000 inhabitants was amalgamated in the 1970s; the name comes from a long-ago settler named Eric von Erkersdorp. Hatzbach Wolferode History Stadtallendorf was given city rights in 1960; it had been known until then simply as Allendorf. During World War II, Stadtallendorf was a secret munitions centre. The armament firms WASAG (Westfälisch-Anhaltische Sprengstoff Actien-Gesellschaft, "Westphalian & Anhaltish Explosives A.G.") and DAG produced munitions and explosives in two separate large facilities located in the woods nearby. At the time, it was one of the largest of all munitions production centres in Europe. The Munition centre continued throughout the war without being detected by the Allies. Labor was provided by both German and foreign forced laborers, including prisoners of war and concentration camp inmates, housed in about a dozen camps in the surrounding area. The 6 square kilometre premises where the wartime arms works were built were said to be one of Germany's biggest contaminated former industrial sites, in parts with high concentrations of chemical contaminants on residential properties. Since 1991, the premises have undergone a far-reaching cleanup; in March 2006, the job was officially declared done. According to information from the Hesse Environment Ministry, the cleanup cost € 167 million. 154 tonnes of contaminants were dug out of the ground, 697 tonnes were dug out of a