A controversial plan for a road tunnel past Stonehenge has been finalised by the government.
Campaigners claim the 1.8-mile dual-carriageway tunnel will cause "irreparable damage" to the landscape.
However, Transport Secretary Chris Grayling said the plan will "transform" the A303, "cutting congestion and improving journey times".
Stonehenge tunnel plan finalised by government
BBC News
12 January 2017
The plan involves building a tunnel for the A303, which runs past the ancient monument
A controversial plan for a road tunnel past Stonehenge has been finalised by the government.
Campaigners claim the 1.8-mile dual-carriageway tunnel will cause "irreparable damage" to the landscape.
However, Transport Secretary Chris Grayling said the plan will "transform" the A303, "cutting congestion and improving journey times".
A public consultation to get the views of drivers and residents will run until 5 March.
The busy A303 currently passes within a few hundred yards of the ancient monument.
The tunnel forms part of a £2bn government scheme to upgrade all remaining sections of the road between the M3 and M5.
'Time bomb'
However, campaign group Stonehenge Alliance believes any tunnel shorter than 2.7 miles would do "irreparable damage to the landscape".
The chairman of Amesbury Museum and Heritage Trust, Andy Rhind-Tutt, described the tunnel plan as a "self-destructing time bomb" which would "do nothing" for traffic problems in the area.
Thousands of people have backed a campaign calling for a longer tunnel to protect the landscape
In 2015, a Stonehenge Alliance petition calling for a longer tunnel gained 17,500 signatures.
In a statement, the group said: "The Alliance does not advocate new road building at Stonehenge, but accepts the need to improve the tranquillity and appearance of the World Heritage Site and its setting.
"If the government insists on widening the A303 by means of a tunnel, it must be sufficiently long to avoid any further damage to [Stonehenge] and its setting."
English Heritage and the National Trust have also given their support to the option of "the longest tunnel possible".
Highways England's 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.
"The public exhibitions will provide an excellent opportunity to explain further our plans and to hear feedback from stakeholders."
Stonehenge is one of the Europe's most recognisable prehistoric monuments.
The history of the Wiltshire site dates back 4,500 years and it is the only surviving lintelled stone circle in the world.
A report by UNESCO and the International Council on Monuments and Sites has recognised the benefits of the project.
Congestion on the A303
£1.4bn
Proposed cost of Stonehenge tunnel
1.8 miles is the length of the proposed tunnel
9.6 sq mi around Stonehenge is a World Heritage site
33% of the route is single carriageway
84 years since the A-road opened
Source: Various
Stonehenge tunnel plan finalised by government - BBC News
Campaigners claim the 1.8-mile dual-carriageway tunnel will cause "irreparable damage" to the landscape.
However, Transport Secretary Chris Grayling said the plan will "transform" the A303, "cutting congestion and improving journey times".
Stonehenge tunnel plan finalised by government
BBC News
12 January 2017
The plan involves building a tunnel for the A303, which runs past the ancient monument
A controversial plan for a road tunnel past Stonehenge has been finalised by the government.
Campaigners claim the 1.8-mile dual-carriageway tunnel will cause "irreparable damage" to the landscape.
However, Transport Secretary Chris Grayling said the plan will "transform" the A303, "cutting congestion and improving journey times".
A public consultation to get the views of drivers and residents will run until 5 March.
The busy A303 currently passes within a few hundred yards of the ancient monument.
The tunnel forms part of a £2bn government scheme to upgrade all remaining sections of the road between the M3 and M5.
'Time bomb'
However, campaign group Stonehenge Alliance believes any tunnel shorter than 2.7 miles would do "irreparable damage to the landscape".
The chairman of Amesbury Museum and Heritage Trust, Andy Rhind-Tutt, described the tunnel plan as a "self-destructing time bomb" which would "do nothing" for traffic problems in the area.
Thousands of people have backed a campaign calling for a longer tunnel to protect the landscape
In 2015, a Stonehenge Alliance petition calling for a longer tunnel gained 17,500 signatures.
In a statement, the group said: "The Alliance does not advocate new road building at Stonehenge, but accepts the need to improve the tranquillity and appearance of the World Heritage Site and its setting.
"If the government insists on widening the A303 by means of a tunnel, it must be sufficiently long to avoid any further damage to [Stonehenge] and its setting."
English Heritage and the National Trust have also given their support to the option of "the longest tunnel possible".
Highways England's 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.
"The public exhibitions will provide an excellent opportunity to explain further our plans and to hear feedback from stakeholders."
Stonehenge is one of the Europe's most recognisable prehistoric monuments.
The history of the Wiltshire site dates back 4,500 years and it is the only surviving lintelled stone circle in the world.
A report by UNESCO and the International Council on Monuments and Sites has recognised the benefits of the project.
Congestion on the A303
£1.4bn
Proposed cost of Stonehenge tunnel
1.8 miles is the length of the proposed tunnel
9.6 sq mi around Stonehenge is a World Heritage site
33% of the route is single carriageway
84 years since the A-road opened
Source: Various
Stonehenge tunnel plan finalised by government - BBC News