Next to Unzen Jigoku (“Unzen Hell”) there is a route 57 (“Unzen road”). The road is very unique, it’s smoky! Cars and humans can to pass amid the smoke!
We can walk through Unzen Jigoku (“Unzen Hell”) as well. Unzen Jigoku is more smoky. But the smoke is natural hot spring gasses, so warm and comfortable even cats are at ease. Promenades in Unzen Hell geothermal field takes you to the leisurely walk with the scenery evokes a vision of hell.