Ilgaz 15 July Independence Tunnel, shortly Ilgaz Tunnel,, is a highway tunnel through the Ilgaz Mountains between Kastamonu Province and Çankırı Province in northern Turkey. The tunnel has twin tubes of
5,370 m (17,620 ft) and
5,391 m (17,687 ft) in length. The tunnel was opened to traffic on December 26, 2016.
