The government has finalised plans for a tunnel past Stonehenge.
The Department for Transport (DfT) has unveiled proposals to build a 1.8 mile dual carriageway tunnel for the A303 as it passes the World Heritage Site in Wiltshire.
The road, currently a single carriageway, is a notorious bottleneck for motorists on their way to the South West.
DfT officials claimed a tunnel would remove sight and sound of traffic for visitors to Stonehenge while improving journeys for drivers.
Transport Secretary Chris Grayling said: "This major investment in the South West will transform the A303 and benefit those locally by cutting congestion and improving journey times.
"It will also boost the economy, linking people with jobs and businesses with customers."
The tunnel is part of £2 billion of investment in the South West, the DfT said.
Last May, a major international report concluded a tunnel could benefit Stonehenge if it is well designed and constructed.
Highways England chief executive Jim O'Sullivan said: "Our plans for the A303 recognise the national importance of the route and these improvements will bring real benefit to the region and local communities."
A consultation into the Stonehenge proposals will run until March 5, with the preferred route announced later this year.
The scheme to tackle congestion in the area was announced by the Government in December 2014.
