the water channel in Heppenheim. Interfering with the Stadtbach was a good way for its opponents to damage the city. In 1483, during the dispute between Elector Philip and Worms the Eisbach was sabotaged, likewise in 1516 Francis of Sickingen diverted the Stadtbach during his siege of Worms. Even the residents of Horchheim sabotaged the Eisbach several times in their dispute with the city. Sights Eis valley Eiswoog Southwest of the municipality of Ramsen the Eisbach is impounded to create the Eiswoog. There is a hotel-restaurant on the dam; below it are managed fish ponds. A three-kilometre-long path runs around the lake. In the Eiswoog itself are brown trout, perch, northern pike and brook trout. Because the lake is privately owned, fishing is forbidden. The strictly protected kingfisher nests by the lake. The wheatear, which is very rare in Germany and was placed on the IUCN Red List of endangered species in 2008, was registered as a migrant here. Railway bridges Of technological interest in the Eis valley are the bridges of the regional Eis Valley Railway: The Eis Valley Viaduct, finished in 1932 and used until 1988, has a height of and, with a length of , is the longest railway bridge in the Palatinate. The Bockbach Viaduct over the Bockbach stream was built at a cost of 375,000 RM and is high and long. The Dreibrunnen Viaduct, built at a cost of 245,000 RM, is high and was made using a single arch without any intermediate piers. Stumpfwald Railway Die Stumpfwald Railway, a heritage narrow gauge railway (600 mm) with open wagons, runs at certain times as a tourist attraction between Ramsen and the Eiswoog. Its night-time "torchlight services" are especially popular. The "incorruptible hand" The so-called "incorruptible hand" is displayed in a showcase in the Protestant church at Eisenberg. The hand is linked to a legend about a false oath. Erdekaut The Erdekaut Adventure Park between Eisenberg and Hettenleidelheim is a protected area on the site of an old clay pit. In a historic building in the centre the only preserved pit, the Grube Riegelstein, is run as a mining museum. Day of Action Every year at the beginning of October, usually on German Unity Day, the Car-Free Eis Valley Day of Action (Aktionstag Autofreies Eistal) attracts numerous visitors to the region. The state road, the Landesstraße 395, which runs through the valley from Grünstadt-Asselheim to Enkenbach,