On May 3, 2023, Turkey will host the opening ceremony of the Zigana tunnel with a length of 14.5 km. It will be the longest in Europe and the third longest in the world! The tunnel connects the provinces of Trabzon and Gyumushkhane and reduces travel time from 1.5 hours to 40 minutes. Turkish President Recep Tayyip Erdogan will take part in the ceremony.