Discover the amazing archaeological find of an ancient port in Constantinople made by the engineers behind the world's deepest submarine tunnel.
The ambitious Marmaray Project seeks to connect two continents via the world’s deepest undersea tunnel - some 60 metres below sea level. This would provide a link between the Asian and European halves of Istanbul. In order to build the tunnel, engineers had to begin construction beneath a busy shipping lane, just 12 miles away from an active fault line. Construction was halted after the discovery of an incredible nautical treasure – an ancient port of Constantinople.