There are meandering rivers, cut-off spurs and great v-shaped valleys formed by the rivers in the mountains; valley plains and fluvial terraces are poorly developed while a lot of flat areas are found on the tops and sides of mountains.
山々の間には、著しい蛇行を示す河川と、その作用で形成された環流丘陵や雄大なV字谷が見られ、谷底低地や河岸段丘の発達は乏しいが、その一方で山頂や山腹に平坦面が多数見られる。