National Highway 315 (or G315) is the main route leading to Mang Nhai, this is also considered the "loneliest national highway" in China, piercing through the Gobi desert and the desolate lands, where the sound of birds chirps. is also a luxury.
However, the scenery along the way is so beautiful that it makes travelers feel like they have entered another world, vague and unreal.
In the photo is a section of Highway 315 passing through a dry valley, in the middle is a dry river, both banks have a strange dark red color, because thousands of years ago, the river bed's geology accumulated a lot of sulfur