瀑布連結參天的火山湖及地底石塊空間，也象徵著連接自己和宇宙，雖然身在人間，但思想不受局限，突破天際。白雨也是從此作後開始在作品中加入封閉的水池和瀑布等元素。
The cascade connects the towering crater lake and the underground rock space, also symbolize that ourselves and the universe is connected. Although we are in the man's word, the thought is boundless. Since this artwork, Bai Yu started to add the enclosed pool and waterfall in his work.