From the cross-section of the ground you can see clearly the grey-black strata made by volcanic rock and the grey-white tuff layers stacked alternately. Differences in the resistance of the layers to erosion, plus the gradual lowering of sea level, have created layers of stairs.
從剖面上可以清楚看到，灰黑的火山礫岩層與灰白的凝灰岩層交互相疊，岩層抗蝕力的差異，加上海水面逐漸下降，形成層層階梯。