Wall hanging is China`s world miracle! The towering cliffs of Taihang Mountain, not open around the mountain road, so the wise will become the Taihang mountain highway tunnel, this is the world`s most extraordinary road such as hanging wall so that the wall road. Due to the cliff danger, constitute a natural beauty, far see as the grand and magnificent landscape painting scroll; looking out of the window inside the tunnel, and the like in the gallery to see a picture of the scene, beautiful.