The Stonehenge road tunnel is a proposal for a tunnel in Wiltshire, England, to enclose a section of the A303 in a tunnel under part of the Stonehenge World Heritage Site to remove road traffic from view of the stones. Various proposals for a tunnel in the area have been made since the mid-1990s but remain controversial. UNESCO had previously raised concerns that the World Heritage Site would be at risk due to the earthworks associated with a tunnel project.