When the lake rises to a certain level, the force of the trapped water bursts through the jammed ice and creates an icefall, a marvelous sight that can be seen about once every four years.
雪水溶化不斷流入湖泊，當水位升到一定高度，強大水力切割、沖開冰河，即形成冰瀑，每四年可看到一次冰瀑奇觀。