After putting on some rain gear and entering the tunnel, one encounters spring water gushing down like a cloud burst from the tunnel's ceiling, the weight of the water pounding against rain gear produces an extremely shocking sound.
換上雨衣入洞，泉水如急雨般由洞頂傾盆而下，水的沖力打在雨衣上，發出極具震憾力的聲響。