Tuhobić Tunnel (Croatian: Tunel Tuhobić) is one of the most significant structures on the Croatian A6 motorway route. As it is 2,143 metres (7,031 ft) long (southbound tube), Tuhobić Tunnel is the longest tunnel on the A6 motorway route. The tunnel is located at 700 metres (2,300 ft) above sea level, connecting Gorski Kotar and Croatian Littoral regions.