Among all the waterfalls in the yandang mountain area , the three - step waterfall is said to be the most particular : it s hidden in at a dead volcano mouth and obscured by a long narrow valley called chuyue gu the early moon valley . approaching to it , one steps into the volcano mouth and looks at the waterfall showering down from the top rings of the mouth as if it was pouring down from the heaven 瀑分三折天上来,自属高远型风景,然而就在近旁,一条叫做初月谷的狭谷却显示了雁荡山幽深的一面,此谷把气象万千的雁荡山第一名嶂铁城嶂抱的怀里,藏藏抱抱反而把境界廓大了。