We noticed that you're using an unsupported browser. The TripAdvisor website may not display properly.We support the following browsers:
Windows: Internet Explorer, Mozilla Firefox, Google Chrome. Mac: Safari.

Iouzan

Teshikaga-cho, Kawakami-gun, Teshikaga-cho 088-3200, Hokkaido
+81 15-482-2191
Website
Save
Review Highlights
Seems less

I was here in 2013, the sulphur seems more activities. The parking was like $200 and now us $500... read more

Reviewed 2 days ago
Leslie3663
,
Singapore, Singapore
via mobile
the color of the sulfur is amazing

If possible, walk from Kawayu Onsen toward Iozan, the views are worth it. The visit is short, and... read more

Reviewed 1 week ago
Mish_H50
,
Japan
Read all 323 reviews
Map
Satellite
Map updates are paused. Zoom in to see updated info.
Reset zoom
Updating Map...
Overview
  • Excellent29%
  • Very good47%
  • Average21%
  • Poor2%
  • Terrible1%
Travellers talk about
LOCATION
Teshikaga-cho, Kawakami-gun, Teshikaga-cho 088-3200, Hokkaido
CONTACT
Website
+81 15-482-2191
Write a Review
Reviews (323)
Traveller rating
Traveller type
Time of year
Language
  • More languages

1 - 10 of 38 reviews

Reviewed 2 days ago via mobile

I was here in 2013, the sulphur seems more activities. The parking was like $200 and now us $500. Well, still a worth while place to go.

Thank Leslie3663
Reviewed 1 week ago

If possible, walk from Kawayu Onsen toward Iozan, the views are worth it. The visit is short, and there isn't much to do, but see the volcanic activity. Pretty cool.

Thank Mish_H50
Reviewed 1 week ago

We'd walked from the Eco museum. Easy and pleasant walk with changes in the micro environment that were really interesting. The hot spring and steam vents were most interesting too.

Thank Sino_newScouser
Reviewed 7 June 2017 via mobile

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 time to visit both places in a day.

Thank Syrah_09
Reviewed 31 May 2017 via mobile

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 terrible! But it makes...More

Thank rotterdamerik
Reviewed 15 May 2017 via mobile

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 spouting vapor.

Thank E.S.Goh
Reviewed 23 April 2017 via mobile

The smell of sulphur permeates the air at this active volcano. You can walk up to where the steam comes out, and see the yellow sulphuric deposits. A souvenir shop and bathroom are nearby.

2  Thank starlitsky3311
Reviewed 22 April 2017

We went in the morning and the smell indeed very strong and we walked quite inside to see the yellow sulphur.

Thank Editplus
Reviewed 19 March 2017 via mobile

It's amazing to see this rare natural phenomenon up close! Clouds of sulphur steam are rising up from the mountain, and turn the rocks green and yellow. The smell is quite overwhelming, so we didn't spend too much time here, but we still remember this...More

Thank Lieke v
Reviewed 28 January 2017

some people say the sulphur smelled around may harm visitors health. but some say the amount exposing from the volcano is insufficient.

Thank ThaiChineseMalaysia
Nearby
Nearby Restaurants
Orchard Grass
48 reviews
1.31 km away
Genpei
23 reviews
2.40 km away
Cream Dowa
24 reviews
1.57 km away
Sunayu Rest-house Retarachip
23 reviews
6.65 km away
Nearby Attractions
Lake Mashu
562 reviews
8.48 km away
Kaminoko Pond
202 reviews
9.30 km away
Bihorotoge Lookout
153 reviews
16.02 km away
Tsubetsu Toge Out Look
40 reviews
18.06 km away
Questions & Answers
Get quick answers from Iouzan staff and past visitors.
Note: your question will be posted publicly on the Questions & Answers page.
Posting guidelines
Submit