I had a spot marked as a possible "henge" from a while ago , it's in Fargo plantation south of the cursus quite close to the sites marked on the two maps I've seen .If that is the site it's a long way off any solstice alignment /Orion type shape etc . Fwiw the solstice at the NW as seen from Stonehenge would be about 300m further north from the site has been suggested i.e. at the northen section of Fargo planation .