If it is not too late Anna.
There is full public access at Woodhenge and Durrington Walls. Mind the newish Nation Trust gates as they had very powerful springs.
Admire the handsome folk on the Durington Walls display board :-) as well as the beautiful setting of the earth bank, the Walls or Henge. Try and imagine the site filled with small rectangular huts and two wooden circles like Woodhenge.