Ettlingen (ˈɛtlɪŋən; South Franconian: Eddlinge) is a town in Baden-Württemberg, Germany, about south of the city of Karlsruhe and approximately from the border with Lauterbourg, in France's Bas-Rhin department. Ettlingen is the second largest town in the district of Karlsruhe, after Bruchsal. Ettlingen is situated at the northern edge of the Black Forest on the Upper Rhine Plain. The Alb River arises in the hills of the Black Forest and flows through Ettlingen before emptying into the Rhine at Eggenstein-Leopoldshafen, making Ettlingen a central feature of the Albtal, the Alb Valley. Central Ettlingen and its largest constituent communities (Bruchhausen, Ettlingenweier, Oberweier) lie on the plain itself, but some of the villages (Spessart, Schöllbronn, and Schluttenbach) are nestled among the northernmost foothills of the Black Forest. The municipality of Ettlingen is bordered by the following communities, clockwise from the north: Karlsruhe, Waldbronn, Karlsbad (Baden), Marxzell, Malsch, and Rheinstetten, all of which belong to the district of Karlsruhe, except for the independent city of Karlsruhe itself. Since the major communal reforms enacted by Baden-Württemberg in the early 1970s, the municipality of Ettlingen has consisted of the town of Ettlingen itself and the communities of Bruchhausen, Ettlingenweier, Oberweier, Schluttenbach, Schöllbronn, and Spessart. Ettlingen was an important crossroads during Roman times, when the region was part of the province of Germania Superior. This is demonstrated by the many artifacts found in the area, including the "Neptune Stone," which commemorates a flood of the Rhine, and the remains of a Roman bath excavated beneath St. Martin's Church. The town was first mentioned in 788 as "Ediningom" in a deed of donation belonging to Weissenburg Abbey in Alsace (now in France). In 965, the village of Ettlingen ("Ediningom") received market rights (Marktrecht) from Emperor Otto the Great. In 1192, Emperor Henry VI, one of Frederick Barbarossa's sons.