The Guoliang Tunnel road is one of the largest tunnels in the world, spanning a whopping 1.2 km, it is located in the remote Taihang Mountains of the Henan Province in China. Even skilled local drivers are scared to tackle this tunnel road and many only use it if they absolutely have to. Opened in 1977, the road itself soon became a popular tourist attraction, although these days only the very bravest of tourists even attempt it. Read more at: https://tr.im/4TbEp