Wikipedia
Neugrabenflöße
The Neugrabenflöße (also called the Floßgraben), was a roughly 18 km long Kunstgraben dating to the 17th century. It enabled the rafting of timber for the mining and smelting industries in the Ore Mountains of eastern Germany. It ran from the River Flöha near Fleyh ( Fláje) to the Freiberger Mulde near Clausnitz in the Ore Mountains.