The Murg is an 80.2-kilometre-long river (including its headstream, the Rechtmurg) and a right tributary of the Rhine in Baden-Württemberg, Germany. It flows through the Northern Black Forest into the Upper Rhine Plain, crossing the counties of Freudenstadt and Rastatt. Geography Course The Murg valley is one of the largest and deepest valleys in the Black Forest (up to over 700 metres deep) and generally runs in a northerly direction. It separates the precipitation-rich main crest of the Northern Black Forest, including the Hornisgrinde (1,164 m), to the west, from the densely forested bunter sandstone plateaux in the east. The Murg originates from 2 large headstreams in the western part of the municipality of Baiersbronn. Below the Schliffkopf at about , the main headstream of the Right Murg (Rechtmurg) is formed by the Schurbach stream and Tränkenteich pond, a little above the Murgursprung ("Murg Source"). The other, left-hand headstream is the Red Murg (Rotmurg), whose source is the Red Murg Spring (Rotmurgbrunnen, also 915 m) which leaves the pass summit of Ruhestein (915 m) and is fed by brooks such as the Finsterbächle and Muckenbächle. From the confluence of its two headstreams at about 595 m the Murg flows southeast through the valley of Mitteltal to Baiersbronn, where it swings into line with the Forbach which joins from the south. From here it is followed by the B 462 and the Murg Valley Railway. Initially it runs northeastwards to Klosterreichenbach, but thereafter it heads north-northwest. In the wide Wiesental valley it passes the villages of Röt, Huzenbach and Schönmünzach. After flowing through a narrow, sparsely populated and steep-sided gorge the river passes a rocky section in which are the settlements of Forbach, Gausbach, Langenbrand and Au im Murgtal. In its slowly widening valley, the villages of Weisenbach, Hilpertsau, Obertsrot, Scheuern, the town of Gernsbach and finally the village of Hörden follow in quick succession. Between the now gently rising hillsides the Murg runs northwest through Ottenau, past the industrial town of Gaggenau and the villages of Bad Rotenfels, Oberndorf, Bischweier and Kuppenheim, where it reaches the Upper Rhine Plain. Here it crosses under the A 5 motorway near Niederbühl and, in the area of Rastatt, the B 3, the Rhine Railway the Mannheim–Basel railway (Rhine Valley Railway). Below Rheinau the Murg empties into the Rhine near Steinmauern at about 110 m at Rhine kilometre number 344.5. On the French side