The Werra () is a river in central Germany, the right source river of the Weser. The Werra has its source near Eisfeld in southern Thuringia. After 293 km the Werra joins the Fulda River in Hann. Münden, forming the Weser. The Werra Valley ("Werratal") forms a natural border between the Rhön hills and the Thuringian Forest. Highlights here include Eiben Forest near Dermbach, the fairytale sandstone cave at Walldorf, the deepest lake in Germany formed by land subsidence, which is near Bernshausen, and the "Krayenburg", the ruins of a castle (dating back to the year 786), restaurant and a tower with a wide outlook into the Werra valley near Tiefenort. The following towns or townships lie along the Werra: Hildburghausen, Meiningen, Bad Salzungen, Tiefenort, Philippsthal, Gerstungen, Eschwege, Witzenhausen and Hannoversch Münden. External links · [LINK: http://www.krayenburg.com/index.html] Krayenb