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