On a plain in southern England, in the county of Wiltshire, stands one of the most famous and debated monuments of the ancient world. Stonehenge has been attributed to the druids, to Merlin, even to visitors from the sky. Yet what we know for certain is already remarkable enough: a circle of stones built by prehistoric communities and carefully oriented on the sun's path on the extreme days of the year.
A monument built in many phases
Stonehenge was not built all at once. Archaeologists recognise several phases, spread over a very long period:
- A first phase with a circular enclosure formed by a ditch and a bank, dated to around 3000 BC.
- Later phases in which the great stones were raised, starting roughly in the middle of the third millennium BC.
- Reorganisations and movements of the smaller stones, carried out at various times.
This long history means that Stonehenge was an important place for many generations, who transformed it without abandoning it.
The stones
The monument is made of two main types of stone:
- the sarsens, large blocks of local sandstone, used for the outer circle and the inner trilithons;
- the bluestones, smaller, brought from the Preseli Hills in west Wales, a considerable distance away.
The outer circle was formed by upright stones topped by horizontal lintels, which ran continuously to create a suspended ring. Inside, five trilithons, that is pairs of uprights with a lintel, were arranged in a horseshoe.
One detail strikes anyone who studies the construction: the lintels were fixed to the uprights with mortise-and-tenon joints and linked to one another with interlocking joints, techniques typical of woodworking. It is as if the builders had translated into stone a knowledge born with timber.
The solstice axis
The best-known feature of Stonehenge is its orientation. The main axis of the monument is aligned with:
- the point on the horizon where the sun rises at the summer solstice;
- in the opposite direction, the point where it sets at the winter solstice.
The monument is connected to a long path bounded by ditches, called the Avenue, which follows the same axis in its first stretch. Near the entrance stands a large isolated stone, the Heel Stone, which falls on the same line of sight.
Many scholars believe the most significant moment was the winter solstice sunset, when the sun disappears at the southernmost point of its path and the days begin to lengthen again. Others emphasise the summer sunrise. Either way, the monument links the stone circle to the two hinges of the solar year.
The circle as a sacred form
Why a circle? The communities who built Stonehenge left no texts, so any symbolic reading remains an interpretation. We can, however, observe some characteristics of the form:
| Characteristic | Possible value |
|---|---|
| No privileged point on the edge | equality of those standing around |
| A defined centre | a place of gathering and attention |
| An axis crossing it | connection with the sky and with time |
| A visible boundary | separation between inside and outside |
The circle with an axis is one of the simplest and oldest figures of sacred geometry: closed totality and open direction, together.
The legends that came later
Most of the stories associated with Stonehenge are much later than the monument. In the twelfth century Geoffrey of Monmouth told how the stones had been brought from Ireland through Merlin's arts. In the eighteenth century the antiquarian William Stukeley helped spread the idea that Stonehenge was a druid temple; but the druids described by classical sources lived many centuries after its construction.
These legends have their own value, because they show how each age has tried to make sense of the place. They should not, however, be confused with history: knowing how to distinguish myth from evidence is part of any serious study of sacred geometry.
What it teaches us
Stonehenge shows that, long before writing, human beings were able to watch the sky patiently, to recognise its rhythms and to fix them in lasting architecture. The monument predicts nothing and guards no secret formulas: it is a stone calendar and at the same time a place of gathering, where the time of the cosmos became visible to the community.
Maestro Cornelio invites us to look at monuments like this with a double gaze: rigorous about the facts, open to meaning. The stone circle reminds us that the sacred is often born from attention to the cycles that govern life.
In short
- Stonehenge was built in several phases, starting with a circular enclosure dated to around 3000 BC.
- It is made of large local sarsens and bluestones brought from west Wales.
- The lintels are fixed with joints derived from woodworking.
- Its axis is aligned with the summer solstice sunrise and the winter solstice sunset.
- The associations with Merlin and the druids are legends much later than the construction.
