The New Zigana Tunnel project in Turkey is currently under construction and is expected to cost up to US$1 billion in all. When complete this tunnel will measure an impressive 14.5km long. The two lane tunnel will connect Gumushane and Trabzon in the country’s north east, and will be located at an altitude of over 1,200m above sea level. The construction of the tunnel will replace the existing route over the Zigana Pass, which reaches an altitude above sea level of 2,032m. Once complete the new tunnel under