Mt. Iozan is located between Lake Kussharo and Lake Mashu, its entire mountain is made of sulfur.

Smoke of sulfur makes a sound with roar and goes up here and there on the mountain.

Tourists may experience the beating of the active volcano.

Some trails are available to walk around the mountain.

Kawayu-onsen or Kawayu Hot Spring resort is nearby, and a lot of accommodation with the sulfur hot water.

Kawayu-onsen is the base of Lake Mashu,and Lake Kussharo.

Access and Getting Around

It is a 15-minute walk from Kawayu-onsen. To Kawayu-onsen:

The JR Senmo line train runs between Kushiro and Abashiri.

By train

Kushiro Station⇔(1hr40 min)Kawayu-onsen⇔(1hr20 min)Abashiri Station, The JR Senmo Line, 7~9 trains per day.

By car

2 hours from Kushiro Station, 1 hour from Abashiri Station.