This terrifying road's nickname is "The road that tolerates ... chiseled into the mountain by local villagers. The Guoliang Tunnel is located in the Taihang Mountains in China's Henan Province ...

The road rapidly gains a 2.4-km elevation within a short distance, meaning you’ll have to drive over several steep sections without any grip from the tires. The Guoliang Tunnel Road is one of ...

This is a stretch of road where it pays to look ahead, rather than down. Or maybe it would just be best to avoid it altogether. But why was the Guoliang Tunnel built in the first place?