Later, the earth's crust shifted, and the present topography of Taiwan began to take shape. The temperature rose, and peaceful, level rivers became quick-flowing streams spanning different elevations.
到了第三世紀冰河時代末期，地殼劇烈升降，台灣地形隆起、溫度升高，平緩的河川變為陡峭、短急，台灣鱒無法生存。