Constantinople Rescue

Sunday 14 December, 8.30pm on NATIONAL GEOGRAPHIC

It is one of the most ambitious construction projects of modern times: building the world’s deepest submarine tunnel beneath one of the busiest shipping lanes on the planet, just 12 miles north of one of the most active fault lines today. The Marmaray Project will stretch the length of three football fields underneath the Bosporus – linking Istanbul’s Asian and European halves. To engineers, the greatest challenge was equipping the tunnel with anti-seismic technology to survive the major earthquake predicted for Istanbul… until they unearthed the greatest nautical archaeological find of the century. An ancient port of Constantinople.