I added some roads that where not on the map already and corrected others in and around Ankeveen. Tracked them first with OSMTracker on a 10km bike ride. That was fun!

People in the street where wondering a little what this guy was up to, riding up till every endpoint in the roads.

I had also a good view of streams there. I will go there some more with a piece of paper and draw in those streams as far as I can seen them.