For many a century, the enns river was a major transport route for iron ore from the Erzberg.
Because of violent torrents and large reefs, journeys on the river raft were very dangerous. In the 16th century, rafts were replaced by barges that could transport up to 10 tons of load downstream. On their way back, the barges were loaded with food and pulled upstream by horses along special shore paths, the so-called "Treppelwege".