Construction is set to start next year on a controversial 3.3 km-long tunnel to replace a heavily-used highway next to the U.K.’s prehistoric Stonehenge circle in England unless a final legal challenge scuttles the $2.1-billion project.
In early November, U.K. transportation secretary Grant Shapps approved a proposal by Highways England for the 13-km highway that includes twin bored tunnels to replace a busy stretch of the A303 highway, which passes about 165 m, or 540 ft, from the monoliths.