We have spent the night and the day at Clausthal Zellerfeld and we discovered that it is an area which is Unesco protected because of its old mines driven by waterpower since 1200. We visited a museum -only thing that the weather allowed us to do- about that this morning and this was fascinating to see how people were using water to extract iron, silver and other precious metals. 

This is also the place where Robert Koch was born.

I’ve got a big cold and feel bad, so we spent the afternoon at the hotel. Tomorrow, we drive north to Lübeck.

So far, you get an example of how many men you need to dig a hole in the ground: