Visitors standing at the Heel Stone on the winter solstice – December 21 – can watch the afternoon winter sun setting between Moel Famau and Moel Arthur.
Mr Hill said: “We have included, in the north-east ditch, a small cairn showing where the grave of the ‘Stonehenge Archer’ grave was found.
“He dates to about 2300 BC and he was shot dead by arrows. At least three of them were still embedded in his ribs when his skeleton was found in the 1980s.” Remains of prehistoric fires and ox jaws ritually buried into the surrounding ditch can also be found at Ness Gardens.
While Mr Hill’s attention to detail was impressive, his experiment still generated some surprises.
Within days of digging the ditch around the edge of the henge, heavy rain filled it, creating a mini moat.
Mr Hill said: “That got us thinking about the function of the ditch.
“Was it supposed to be full of water? If so, was that for ritual bathing or a cosmological reason connected to the elements of water, fire and earth?
“Or, more practically, was it to keep cattle out?”
