Introduction to rock shale wall hanging: The scientific name of rock shale wall hanging is travertine waterfall. It is formed by calcium carbonate accumulated in river water on the cliff for many years. It looks like rock shale. As time goes by, the calcium carbonate material becomes more and more The thicker the paste, the larger the area, forming a large-scale travertine waterfall landscape. In the "Wall Hanging Cliff", there are piles and strings of them, ranging from ocher red, dark brown, light gray, in various shapes, stretching for several kilometers, forming a series of colorful natural wall hangings.