KASTAMONU, TURKEY - DECEMBER 27: An aerial view of Ilgaz Tunnel after snowfall in Kastamonu, Turkey on December 27, 2021. The tunnel was opened five years ago and has made the route safer for drivers. The road crossing the high slopes of Ilgaz mountain often was not safe with reduced visibility distance due to dense fog. The tunnel also contributed approximately 250 million Turkish liras to the economy. Ozgur Alantor / Anadolu Agency/ABACAPRESS.COM