Maybe that's because it's also one of the world's steepest roads, chiseled into the mountain by local villagers. The Guoliang Tunnel is located in the Taihang Mountains in China's Henan Province ...

Similar to the Guoliang Tunnel in China, Taroko Gorge Road is one of the most dangerous roads in the world because it is carved out of a mountain and runs through one too. This popular nearly 12 ...

It is so easy to take the roads which help us get around the world for granted - whether ... But why was the Guoliang Tunnel built in the first place? The people who lived in the isolated cliff ...