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Iouzan, Teshikaga-cho

(300+ reviews on the web)
Mountain Nature / Park
Witness the natural spectacle of sulfur vents at Iouzan, an active volcano releasing sulfuric gases that often cause the surrounding landscape to turn yellow. A short 2.5 km (1.55 mi) scenic walk from the nearby town or from the onsite parking lot brings you right to the steaming vents and the rocky, barren landscape. The parking lot's fee includes access to the Lake Mashu caldera viewpoint. Plan to see Iouzan and other attractions that appeal to you using our Teshikaga-cho vacation generator.
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Reviews
TripAdvisor
  • Located at the midpoint between Lake Kussharo and Lake Mashu, this is a national park that will not be missed. Parking is 500yen for both Lake Mashu and Iouzan so make sure you allocate sufficient tim...  more »
  • We stopped on our trip and we were pleased with the scenery. It looks as if you step on some planet. The ground is grey and there is a lot of steam and yellow sulfur on the ground. The smell is terrib...  more »
  • You can smell the pungent sulfur once you get out of the car. The large number of rhododendron plants were unfortunately not in bloom yet but it would make a pretty sight next to the bare mountain spo...  more »