Three Circles set out Stonehenge.

Observe that two pairs of trilithons are set to arcs. The size of these circles is about the same as the sarsen circle.

A centre-point and radius length are essential information used to set out a curved feature.

That similar information was relayed from Stonehenge’s designer to it’s builders, to physically locate these trilithon arcs, is logical.

The location of these red-circle centre-points is not  random.

Intersecting arcs of the red circles hold two triangles.

The arcs cut the solstice axis on the blue-stone circle (south-west) and sarsen circle (north-east). Within the arcs are two perfect or equilateral triangles, (FFA and FFC)

This gives seven fixed points:

  • four are where the axis intersects the sarsen (A,B) and blue-stone circles (C),
  • two are the triangle centres (D),
  • and Stonehenge’s centre-point, (E).

Below is how Stonehenge was set out prior to being constructed. This original unit of measurement is a  baunt (Bronze- Age UNiT). A baunt is approx. 1.037 metres, about a pace.

Stonehenge plan, illustrating how the stones were set using simple geometry with the original unit of measurement (baunts).

An earlier plan, first published 31.12.2015, illustrates how the trilithons were located using these 3-baunt marks.