At Byobugaura strata of Pleistocene continue more than 10km.In Japan we can rarely see landscape like this because of strong diastrophism.Cyosi city ,Chiba Pref.
Mt.Komochi had been in activity 0.9-0.2 million years ago.
We can see dikes around the top of the mountain,which radiate in all directions,Shibukawa city,Gunma pref.
There are many volcanos in the center of Gunma pref.
This reservoir appeared by construction of Funagira dam on the Tenryu River.Tenryu River has five dams,and Funagira dam is situated at the lowest reach of the five dams.
Recently all of these dams is filled up with gravel and sand,Hamamatsu city,Sizuoka pref.