English Heritage have kindly provided us with more information about accessing the northern henge now that it is open to the public. At the moment it is not possible to walk directly between all three henges, so the best way of visiting the site is to park at Nosterfield Nature Reserve and follow the path around until you come to a road. You should then see the entrance on the other side of the road. The walk will take around 10 minutes. Access to the central and southern henges is still by parking in the layby on the road between the two sites. Further information can be found in the link below. Thank you.
Jan Harding
Thornborough Archaeology Group 