The starting point of the Hongyan Grand Canyon is Guo Liang, Huixian County, Henan, and the end point is Xiyagou, Wangmangling, Lingchuan, Jincheng, Shanxi. The canyon is about 130 meters deep and upright 90 degrees down. The walls are like knife splits, the rock color is red, the widest is more than 600 meters, and the total length is more than 40 kilometers. Most of the canyon landscape is in the Wangmangling Scenic Area in Shanxi. It is called the Red Rock Cliff Grand Canyon. The Red Rock Grand Canyon belongs to the South Taihang fault zone, and there are many canyons. The Red Rock Grand Canyon of Xiyagou is an outstanding representative. The canyon section can observe four layers of rock of different ages, and the bottom layer dates back to 2.5 billion years ago.