Stonehenge road tunnel

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

A 2013 proposal was designed to improve the landscape around the monument, while reducing congestion and improving safety on the A303, and was part of proposals to change the site in other ways including moving the visitors' centre. The tunnel was approved in 2017 and received planning permission in 2020, but with costs estimated at £1.7 billion, it was cancelled in 2024.