It could not be said that the inside of the crater was colored like rainbow but the cliff was not covered with plants and showed the layer of the ash colored with a variety of ingredients.
The mountains such as Mt. Tokachi(dake), Mt. Horokamettoku and Mt. Furano(dake) could be approached from the other side but the trails were much longer than the one we stepped ahead.
We could hear some people were talking on the hillside on the other side. They were coming up to this peak from the other side. We found the small dots were moving on the trail on the surface of the hillside.