The Ruhr valley, the former European Capital of Culture, is the largest urban area in Germany with more than 5 million people, 150.000 start-ups, and a long-lasting cole mine tradition.  Damian and Lucas from Pottwatch are telling their success story of how they raised more than 120.000 Euro with a crowdfunding campaign. They tried to embody the complex character of the Ruhr Valley in a wristwatch containing original cole from the last cole mine. They are explaining how it all started, why sometimes you have to leave an idea behind, and how friendship gets stronger if you work together every day.