随着水的侵蚀作用加剧，岩石内发育规模较大的一组节理逐渐形成沟溪，两侧岩石陡峭，侧看为峰，正看如墙，故称之为峰墙。此处是许多峰墙排列在一起，宛如长城，故名为“天然长城”。As water erosion intensified, a major joint developed in the rock and gradually formed a gully. The steep rocks on both sides of the gully looks like a dyke, so the landform is called a peak dyke. Here many peak dykes stand together composing a long wall, so the landscape here is named the Natural Great Wall.