This river has encroached on weak rock(green shist)for a long time,so the ravine like this has been made.We can see wide river terrace on both side of the river. Oto town,Mie Pref. central Japan
Recently many sucessors of family in Japanese mountain villege migrate to city.So we can see deserted houses like this photograph,Koyadaira villege ,Tokusiha Pref.