The T2 Tunnel (), officially Marinos AntypasâÂÂRigas Feraios Tunnel () is a highway twin tunnel on the A1 motorway in Greece. It is the longest road tunnel in South-east Europe. It was built for the motorway to bypass the Vale of Tempe, which was traversed by the very narrow and dangerous Greek National Road 1.
Construction of the T2 Tunnel began in August 2008, along with a section of the motorway, but both projects were slowed in 2010âÂÂ11 by the country's economic crisis. Construction resumed in 2014 and was completed in April 2017, along with the Evangelismos-Skotina section of the motorway.