The extraordinary Trummelbach Falls (In German: Trümmelbachfälle), near Lauterbrunnen, are a series of ten glacier-waterfalls hidden inside a mountain. It is an unusual place where water itself has cut its way through the hard rock, creating deep crevices and caves. The only way to see the chutes is going on a subterranean walk through a man-made series of tunnels that let visitors see the cascades be shooting out through the confined space.