We are campaigning to stop the Government’s proposal to widen the A303 trunk road to the south west where it passes across the iconic Stonehenge World Heritage Site (WHS). The 4-lane carriageway, tunnel, slip roads and deep cuttings would severely damage a landscape that is considered “the most archaeologically significant land surface in Europe without parallel”.


Map showing key archaeological monuments, the tunnel, location of proposed Expressway and National Trust land. We wish to acknowledge the generous support of Amesbury Museum and Heritage Trust for this schematic map which is based on Highways England’s proposal, 2018.

The whole site, extending to beyond the horizons around the famous stones themselves, is about 5.4 km across. All of it makes up a “huge ancient complex” that holds many secrets yet to be discovered. Yet the proposal is for an about 3km (1.9 mile) tunnel (see map above).  It would result in at least 2km of above-ground 21st-century road engineering within the WHS.

More images of the scheme here

The A303 would become the largest ever human intervention in an area fashioned and revered by over a hundred generations of those who came before us.  All archaeology in the construction zones would be destroyed, and there will be no revisiting of the archaeology at a later date.  It would cause irreparable damage to the WHS in breach of the UNESCO World Heritage Convention and ignores UNESCO’s firm advice in 2018 and 2019.

The A303 Stonehenge Scheme

The A303 Stonehenge scheme is one of eight planned improvement schemes along the A303 /A358/A30 corridor.  Highways England admits that the travel time benefits are low and would not be achieved until all eight schemes have been completed.  Only three schemes have been funded.

The eight schemes needed to create the new A303 Expressway are illustrated in the map below.

Stonehenge: much more than a monument

The whole Stonehenge landscape has an outstanding universal value that is of immense significance for all people for all time, and this transcends any consideration of sorting out a 21st century part-time traffic jam.  The road with the tunnel is being sold on a false premise: that it is enhancing “Stonehenge” and the “World Heritage Site”. The triangular field where the stone monument stands … READ MORE

Can you sign our petition?

We have set up a petition to the Secretaries of State for Transport and Culture for those living in the UK and overseas … READ MORE


Behind the road and tunnel plans are numerous myths driving the scheme: from the idea that “increasing road capacity will relieve congestion” to the assertion that the scheme will “enhance Stonehenge’s Outstanding Universal Value”.  We explain our position on these and other myths … READ MORE

The Stonehenge Saga and Timeline

The Stonehenge Tunnel scheme was proposed in December 2014.  But this was in a long line of proposals for road building and other major developments across the Stonehenge World Heritage Site for over 30 years. The newspaper headlines and their links in the early days neatly capture the ups and downs of the Stonehenge Saga … READ MORE

About us

The Stonehenge Alliance is a group of non-governmental organisations and individuals that seeks enhancements to the Stonehenge World Heritage Site (WHS) and opposes development that would cause it significant harm … READ MORE