The rock was as high as hundreds of meters, and the plane was straight as a knife.It is the masterpiece of nature, the work of god, towering erect, like a natural barrier standing there.It is hard to cut stone, poor absorbent and difficult to grow moss.Before it rains, the rocks will sweat, and in the past the technology is undeveloped, people will be able to predict the weather by their axes.Just like the old cold leg,what if only one day changed, the legs is painful.but as long as a day change the appeared rock is sweated.