Introduction to ancient tree fossils: Located on the stone wall of the edge of the mountain along the road from Daping to Changanying in Nanshan, a large number of thousand-year-old tree fossils are black and gray, with wood grains like ancient chestnuts. The outline of the tree fork is clearly visible, and the width and height are about 6 rice. There are also ruins of ancient buildings nearby, which look very much like Miao Village stilted buildings. Each one is taller than the other, with stacked layers and clear outlines. It is an eternal wonder!