The forest is to the north and west of Pierrefonds all the way to Compiègne. (S and E are mostly fields.) There are several départementales cutting through with plenty of dirt roads giving access. There must be a ton of trails
Merlin was O.K., a little on the lighter side and geared towards young adults. Entertaining, though. It's on Netflix Germany so it stands to reason that Netflix France carries it, too, being a European show and all.
Ok thanks, I'll take a look and see if its on there.