Hell Valley is known as Jigokudani in Japanese.
It is a large crater that was formed by a volcano about 200,000 years ago.
Why it's called Hell Valley?
Because hot steam vents and sulfurous streams pour out from the sides of this red valley area, giving it a very hell like appearance.
Ok. Let's go to HELL!!!
From miles away from the entrance, we already smelled the strong sulfur stink. OMG! I just felt like leaving straight but due to curiosity in exploring the HELL, I continued.
This place was surrounded by many red stone cliffs
Boiling sulfurous water. According to the tour guide, the temperature can reach more than 100°C
So now you got the hell feeling right?
Other Hokkaido posts:
Onuma Lake 大沼湖
Crowning Glory of Hakodate