Stonehenge sarsen trilithons and solstitial alignment
Trilitos de Stonehenge con ensambles y alineación solsticial
- Date
- c. 2500 BCE · confidence high
- Place
- Stonehenge, Wiltshire, England
- Credited to
- Late Neolithic / British Beaker communities
- Field
- Tools
⚠️ Disputed: the sources disagree.
What it is
Circle of 25-tonne sarsens with lintels joined by mortise-and-tenon carpentry joints, aligned with sunrise at the summer solstice and sunset at the winter solstice. It is the greatest megalithic engineering work in Europe and a horizon observatory.
The degree of intentional astronomical precision (beyond the solstices) has been debated since Hawkins and Thom; the sarsen phase (c. 2500 BCE) coincides with the start of the Bronze Age in the British Isles.
What it led to
- Mobilisation of thousands of people from across Britain (Durrington Walls), evidence of supra-regional organisation without a state
- Transport of 25-tonne stones over 30 km and of bluestones from Wales over 250 km
- A ritual solar calendar that fixed solstice festivals and the social integration of the territory
- A model of astronomical monument studied by modern archaeoastronomy
Built on
- Neolithic ditch circles (henges)
- Preseli bluestones (phase I, c. 3000 BC)
- Rollers and sledges for transporting megaliths
Made possible
- Bronze Age megalithic observatories
- Ritual solar calendar