If you want to fully enjoy the majestic nature during mountain climbing in Hokkaido, Shiretoko Sulphur Mountain is highly recommended. Located on the Shiretoko Peninsula spanning Rausu and Shari towns in Hokkaido, this active volcano offers the opportunity to experience the allure of a World Heritage Site through multi-day backpacking or thru-hiking. In this article, we will introduce the charms, ways to enjoy, and precautions of climbing Shiretoko Sulphur Mountain – the peak closest to the sea within the Shiretoko mountain range.
"Harsh but Beautiful" – The Reason for Its Popularity
Shiretoko Sulphur Mountain is an active volcano with an elevation of 1,562 m, featuring an altitude difference of about 1,400 m. Despite this, the difficulty level of its climbing routes is quite high, comparable to that of 3,000 m-class mountain ranges.
The rugged trails captivate both novice and experienced climbers, offering a raw encounter with nature—complete with the distinctive sulfur smell, the steam-emitting new crater, and the magnificent natural scenery that reveals the very breath of the Earth. The mountain’s slopes appear almost snowy from a distance, and there are extensive barren rock sections resembling a "hellish valley."
Even today, a large amount of high-purity sulfur is still being ejected. It is said that during the eruption in 1936, approximately 200,000 tons of sulfur were expelled, allowing you to witness firsthand the signs of past eruptions and the dynamic activity of the Earth. The mountain’s beauty, born of such harsh conditions, is one of its main attractions.
Enjoy Tent Camping and Thru-Hiking
The thru-hiking route through the Shiretoko mountain range, including Shiretoko Sulphur Mountain, features four designated camping areas where tent camping is possible. These designated campsites are located at Rausu Flat, Mitsumine, Futatsuike, and the First Crater, each equipped with food storage facilities for bear prevention.
Rausu Mountain is the highest peak of the Shiretoko volcano at 1,661 m. A recommended route is to start on the second day from Sashirui-dake to Nan-dake, setting up camp at the First Crater campsite, and then climbing Shiretoko Sulphur Mountain on the third day. By taking three days to slowly enjoy Shiretoko Sulphur Mountain while camping, you can appreciate the breathtaking views of the Sea of Okhotsk and Kunashiri Island from the summit, as well as admire alpine plants such as the Shiretoko cosmos.
The Climbing Season is from Early Summer to Early Autumn
For those who wish to fully experience Shiretoko Sulphur Mountain, a 2-night, 3-day thru-hike is recommended, although day-trip plans are also possible. If you are confident in your leg strength, even beginners—not just advanced climbers—can spend around 10 hours conquering the rugged, otherworldly mountain of Shiretoko Sulphur Mountain. For a day trip, enter from the Kamuiwakka Trailhead, and explore the remnants of sulfur mining sites and the very top of the new crater, soaking in the magnificent nature of Shiretoko all to yourself.
Whether you choose a multi-day camping thru-hike or a day trip, Shiretoko Sulphur Mountain is typically climbed during the snow-free season, from early summer to early autumn. If your goal is to see the endemic Shiretoko cosmos, choose a time between mid-June and late July, when these delicate, endangered flowers—only reaching a height of 5–10 cm—are in bloom.
A Prior Application is Required for Climbing
When planning to climb Shiretoko Sulphur Mountain, you must submit a prior application to the Hokkaido Okhotsk General Promotion Bureau. Beyond the Kamuiwakka Hot Spring Waterfall, the route toward the Shiretoko Bridge is closed. If you wish to traverse the approximately 600-meter section from Kamuiwakka to the Shiretoko Sulphur Mountain trailhead, a prior application is necessary.
Usage Period
From the third Friday of June to the last Sunday of September
Application Procedure
Obtain the “Road Special Use Approval Application Form” and submit it in advance by either bringing it in person, mailing it, or sending it by fax.
Submission Address
Management Section 2, Land Management Division, Construction Management Department, Abashiri Building Management Office, 7-Nishi 3-chome, Kita Abashiri, Abashiri City, Hokkaido 093-8670
Fax: 0152-43-4953
Parking
There is a parking lot for climbers with space for 4 vehicles located about 1 km before the Shiretoko Sulphur Mountain trailhead.
Important Precautions for Climbing Sulphur Mountain
Clothing & Equipment
With an elevation difference of about 1,400 m on Shiretoko Sulphur Mountain, you must prepare clothing and equipment that can handle sudden weather changes. Base your gear on standard summer mountain equipment and comfortable clothing, but also bring crampons and an ice axe as there may still be snow in some areas during the summer.
Since water sources along the trail may run dry, it is recommended to carry sufficient drinking water. There are generally no restrooms along the trail, so be sure to bring a portable toilet.
Bear Precautions
As the entire area is a habitat for brown bears, bear safety measures are essential. To avoid encountering bears, make noise by using bells or whistles as you walk, and verify in advance how to use bear repellent spray; carry it with you. Also, avoid leaving or burying food and garbage.
Finally: Guide Services are Recommended for Beginners
Shiretoko Sulphur Mountain, recognized as a World Heritage Site in Hokkaido, is a challenging climb and is not recommended for beginners to attempt alone. Opt for a guided tour—whether a day-trip guide tour or a 2-night, 3-day guided tour for summer mountain enthusiasts—for a safe and enjoyable experience. For your first climb of Shiretoko Sulphur Mountain, a guided plan is recommended so you can fully enjoy the magnificent nature and fascinating ecosystem.