Overview

• Save Stonehenge World Heritage Site group brings new appeal to the Court of Appeal.
• Campaigners argue the government failed to consider alternatives and the project's environmental impact.
• The Department for Transport maintains the tunnel will reduce traffic and improve travel times.
• UNESCO warns that the project could lead to Stonehenge losing its World Heritage status.
• Legal battles have delayed the project multiple times since its initial proposal in the 1990s.