During summer, this valley is well known for its cherries: About 20.000 cherry-trees are said to grow at the hillsides of the valley of Neidlingen (near the castle ruins of Reussenstein). The locality itself has something more to offer: a pebble mill, according to its website actually the last producing one in Germany. A handful of grindstones in the creekwater, that's mainly what you can see. But in wintertime, the owner of the mill opens his workshop for the public. Step into the warmth, ask the miller and listen to his explanations about the origin of the stones, the history of those marble mills and the way, the marbles are perfectly rounded by the running water.