Take M27 to join the A31 and carry on to Wimborne Minster.
Then, in about 4 miles, turn left onto the A350. Follow to meet A35 at a roundabout and take the A35 (Dorchester.)
At a roundabout exit on the A351(Wareham,)
At a roundabout exit on the B3075(Swanage,) In about 1mile turn left onto Nutcrack Lane (there is a pub on the corner and may be signed Ridge of Arne of The Toy Museum)
Remain on this road for about 3miles and you WILL come to Arne Nature Reserve.
No cafe at site so bring a picnic. Also RSPB members park free.
Suggest you look at O/S Landranger 195 at any library.
