Where am I?

I decided to re-route via Mapperton on my return from the Bridport Recycling Centre (or whatever it's called) today, after dumping yet more cardboard (for recycling, I hope).  It wasn't a mistake to do so, but it was a mistake to take a wrong turning after that and wander down lanes almost the width of the car.  I was grateful not to have met anyone coming the other way.

But what countryside!