Yizheng Mountain, not only in the cellar green Yangchun, but also the crater formed by the Cenozoic volcanic eruption more than 5 million years ago, there are not only spectacular stone pillar forests, but also complete volcanic geological structures, as well as rare at home and abroad. The wood and bone fossils are geological relics with high scientific value and spectacular scenery in East China. Lushan is 146 meters above sea level, the second highest peak in Suzhong, and the southern part of Tongshan is the first peak in the Soviet Union. It is generally north of the Lushan Mountain and the Yangtze River. 5 million years ago, it used to be the mouth of the ancient Yangtze River. One day, the calm riverbed was suddenly volcanic erupted due to the change of the earth's crust. The hot magma erupted from the river was too late to overflow, that is, it was hit by the surge of rivers and tides. The magma invaded the sedimentary rocks along the cracks in the earth's crust and cooled rapidly. In the process of slow cooling, it crystallizes into an ordered basalt hexagonal crystal column. Due to the repeated volcanic activity, the magma has repeatedly invaded and invaded, and the basalt columns that have been condensed and formed are squeezed into a multi-morphological vertical, obliquely inserted and flat, forming the current Shizhushan.