Soshubetsu-dake South Slopes

双珠別岳

Posted on Dec 4, 2023
0
SSEE
Posted on Dec 4, 2023
0 0
SSEE
11km

Distance

3 hours

Time

570m

Ascent

1383m

Highest point

5/10
Difficulty
Snow Icon | Hokkaido Wilds
Jan-Mar

Best season

GPX

KML

TOPO

GSI

Soshubetsu-dake 双珠別岳 (1383m) is an easily-attained peak in the Nissho Pass 日勝峠 (1022m) area of the northern Hidaka Range. Because the route for the southern slopes starts from National Highway 274 near the Nissho Pass, Soshubetsu-dake's inspiring old-growth Hokkaido forest is some of the most accessible forest in the Hidaka Range. Beyond the treeline, there is a gorgeously mellow treeless slope which would be perfect for beginner backcountry skiers to get accustomed to skiing Hokkaido's classic powder snow. Soshubetsu-dake's northeastern aspects are home to Tomamu Resort's cat-skiing operation.

We visited this route on Mar 11, 2023

The crew: Haidee and Timbah

Topomap

Route Map

Need to know details

Location

Soshubetsu-dake is situated in the far northern reaches of the Hidaka Range in southern central Hokkaido. It is connected to the greater Nissho Pass area – the main national highway linking Obihiro City and the Tokachi Plains to southwestern Hokkaido. The watershed to the west of peak flows into the Soshubetsu River 双珠別川, which flows through the small mountain town of Shimukappu. This route up to Soshubetsu-dake peak starts south of the peak, from the Chisaka Parking Area 千栄パーキングエリア, here, on Route 274 (the Nissho Pass road).

General notes

With a few much more popular and worthy backcountry routes in the area (Mumei-ho and Nissho Peak), this lovely ski-tour-oriented peak doesn’t get much traffic in comparison. It is, comparatively, a mainstay for snowshoers and winter hikers. It’s not for want of ski-worthiness, however. The mellow alpine slopes at the upper portion of this Soshubetsu-dake route are gorgeous, and the views from the summit ridge are fantastic. If you’re looking for mellow, easy-access, untracked skiing in the Nissho Pass area, this peak will deliver.

  • Cat skiing: Tomamu Resort runs a cat skiing operation in the Ruomansorapuchi River catchment on the northeast side of the Soshubetsu-dake peak. The cat road goes all the way to the very top of the peak, so do watch out for heavy machinery when at the peak, and keep off cat-access roads. The cat staff are lovely. As far as we know, no land is leased by Tomamu for their cat-skiing operation besides the cat-access roads (we approached Tomamu Resort for comment on leased area but received no reply). If skiing the northeast side of Soshubetu-dake peak, be nice and don’t ski where catskiing groups are skiing.
  • Peak naming: Soshubetsu-dake is not named on official Japan government topomaps. We’re not aware of who named the peak, but it is indeed referred to within the mountaineering community as Soshubetsu-dake (source). There’s another Soshubetsu-dake in the area too (1347m, source, location).
Hut
None
Route details

This route is not marked. From the large plowed Chisaka Parking area, cross on foot to the northern side of the busy Route 274. This is a main arterial route for heavy transport across the Hidaka Range, so watch out for trucks and other traffic. Skin due northwest for about 100m through the forest until you meet up with the forestry road. Follow the road uphill for about 3km to around 1050m before heading due north through the forest to the summit ridge.

The treeline is at around 1200m, and beyond that, the route traverses a wide open mellow treeless slope stretching to the east and west. Continue uphill to the northeast until you arrive at the 1383m point – the summit of Soshubetsu-dake. There will likely be a cat-track at the summit – take care in low visibility conditions, as there is quite a drop in places down to the track.

For the descent, follow your skintrack back southwest along the ridge, and enjoy some blissful turns in the short alpine section before returning to the forest. Take care on the descent, as there are many small gullies and spurs not marked on the map. Once back at the forestry road, enjoy the mellow gradient to get your free ride back to the highway via your uptrack.

Route Timing
Up | 2.5hrs
Down | 0.5hrs

The time above applies to consolidated-snow spring conditions. Add on a little more if doing this route in deep mid-winter conditions.

Transport

Public transport:

There is no public transport to this route.

By car:

This route is accessed via the main National Highway 274 (Nissho Pass) running between the Tokachi Plains and southwestern Hokkaido. At the trailhead, there is plenty of parking in the large plowed Chisaka Parking Area (location).

Physical maps
Official Topo Map: Sarudake (沙流岳) – map no. NK-54-8-7-1
Official Topo Map 2: Kamitomamu (上トマム) – map no. NK-54-8-6-2

NOTE: The official 1/25000 topo map(s) above can be purchased for 350yen from Kinokuniya bookstore next to Sapporo Station or online (in Japanese).

Aspect
The main aspect skiers are exposed to on the descent and/or ascent is South. Other aspects that may also be encountered while following the route outlined on this page include: Southeast, East. Therefore, keep an eye on the weather forecast a few days ahead of your trip to monitor wind, snow, and temperature. Also, since this route is in the general vicinity of the Furano area, consider looking at the Furano Avalanche Center (on Facebook). They issue sporadic observations throughout the season which may give extra insight into avalanche conditions.

Snow and
route safety

Take care when climbing beyond the treeline here, particularly when approaching the ridge. Climbers may be sheltered from prevailing NW winds on the ascent and may find that conditions at the ridge are much more serious than lower down. Also note that the route starts at nearly 800m in altitude – temperatures near Nissho Pass can be much colder than other winter mountain objectives elsewhere, particularly in southwestern Hokkaido. Tomamu Resort runs cats up to the peak on the northeast side – keep off cat access roads.

Soshubetsu-dake South Slopes Difficulty Rating

Category

Grade

Points

Strenuousness

Vertical Gain

C

30

Time ascending

C

3

Technicality

Altitude

A

10

Hazards

D

0

Navigation

C

6

Totals

49/100

GRADES range from A (very difficult) to D (easy).  More details here. Rating rubric adapted from Hokkaido Yukiyama Guidebook 北海道雪山ガイド.

Weather forecast

Windy.com weather forecast for Soshubetsu-dake
Onsen nearby

If you’re headed back west (in the direction of Sapporo), then the closest onsen is the Hidaka Kogenso Onsen ひだか高原荘温泉 (location, 500yen), at the foot of the Hidaka International Ski Hill 日高国際スキー場 (location). This onsen doesn’t have any rotenburo outdoor pools, but there’s a sauna, cold pool (extremely cold), and medium-sized indoor hotspring pool.

Extra Resources

Guide Options

If you’d like to ski this route and/or explore other peaks in the Hidaka Range together with a local certified guide, get in touch with Yasuko Kikuchi. Born and raised in Hokkaido, she’s a JMGA-certified guide now based in Sapporo. Her outdoor experience is broad and worldwide, having worked as a Canadian Ski Patrol member, and has sumitted a number of 6,000m+ peaks around the world. She speaks good English, and can arrange transport to and from the Hidaka area. In addition to Yasuko, also see a full list of English-speaking Hokkaido Mountain Guides Association (HMGA) guides on the HMGA website here

If you’d like to make the most of what the leeward northeast side of the peak offers, consider signing up for one of Tomamu Resort’s catskiing trips. Includes a gourmet lunch in a yurt in the valley below.

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Show Full Route Notes Close Route Notes

Route Trip Notes

In a sense, this trip up Soshubetsu-dake continued on from exploration we’d done to Karifuri-dake a few weeks prior. The northeastern slopes of Karifuri-dake were sublime powder, so Soshubetsu-dake seemed, on paper, to offer similar snow quality. We were much later in the year this time around though, so we didn’t have our hopes up too much.

The snow was very firm underfoot as we set off. It was spring conditions, and everything had frozen overnight. We were skinning along the snowed-in forestry road on concrete.

With a bright blue sky above, however, we were confident things would soften up as the day wore on.

After about 45 minutes on the road, we cut up the hillside towards the main ridge to Soshubetsu-dake. We were surrounded by beautiful old-growth forest, frosted white.

The benefit of starting from the main Nissho Pass highway, close to Nissho Pass, is that you’re starting quite high in altitude. Therefore, it doesn’t take long to hit the treeline. This route up Soshubetsu-dake was no exception. Soon we found ourselves on a broad open slope. This promised to give us some beautiful mellow turns on the descent.

From the treeline to the summit of Soshubetsu-dake was very short. Perhaps 20 minutes or so.

We’d heard that Tomamu Ski Resort did cat skiing from the Soshubetsu-dake peak, and sure enough as we approached the peak we could hear the rumble of a ski cat.

We were not quite quick enough to catch it this time around, however, and only caught a glimpse of it as it started its return down to pick up the skiers – the skiers were also already making their way down the northeast slope.

We’d skinned up the southern aspect of Soshubetsu-dake, but the snow surface conditions weren’t much better on the northeastern side of the peak, where the cat ski guests were skiing. It was around lunch time, so we sat down in the sun for a bite to eat.

By the time we’d finished our snacks, the cat was trundling back up to the summit. I ran up to take some photos, and saw none other than the famous-in-Hokkaido Neil Hartman (of Car Danchi fame).

I was excited to see Neil, because he’s a legend. He’s also involved somewhat in the Tomamu cat skiing venture. I was keen to make the connection in order to find out exactly where Tomamu leases land for the cat skiing. If I could find that out, then I could mark the area respectfully and accurately on the PDF map I was planning to make for the area.

Long story short, despite Neil’s best efforts to connect me to the people in the know, the people in the know were unwilling (or didn’t really care) to engage with HokkaidoWilds.org. To the best of our knowledge, it appears Tomamu probably does lease the cat ski uptrack land (for the cat roads), but probably doesn’t actually lease the broad swaths of mountainside to the northeast of the Soshubetsu-Karifuri Ridge where the guests ski.

If anyone has any information to the contrary, we’d love to hear about it!

One possible reason why Tomamu Resort didn’t bother to engage with us regarding the extent of their lease is that in reality, it’s unlikely they will ever need to compete with recreational private skiers on the terrain where they do cat skiing.

That is to say, we were keen to make the most of the day, so we dropped down the northeastern side of the peak for a bit until the snow got too soft, sticky, and warm. To get back to where we’d come from, we had to skin back up to the peak. Even if a private skier wanted to snake the good lines in the cat skiing terrain, there will always be the sting in the tail of having to skin back up and out.

That said, today’s snow was typical spring snow, so we’re keen to get back there deeper in the season to sample more of what this area has to offer.

After skinning back up to the summit of Soshubetsu-dake, we had the gloriously mellow descent back to the main highway to look forward to.

Big wide turns were the flavour of the day, all on beautifully fast and cold cream cheese. We were able to get at least six or seven long turns in before the snow transformed to terribly slow and warm cream cheese.

For the most part, however, so long as we kept in the shade of the trees, the snow was relatively fast.

We jumped from shadow to shadow as we descended, trying our darndest to keep speed up.

We were back at the van within about 45 minutes, and speeding our way back down Nissho Pass to the onsen in Hidaka Town.

At one point, I happened to look to my right as I was driving, and noticed debris from a large wet slide avalanche. Just at the edge of my perception, I thought I saw a large deer at the bottom of the debris. I slammed on the brakes, did a U-turn, and headed back up the road to where we were just across the river from the debris.

Sure enough, there was a large deer sitting at the base of the debris. It moved its head every now and then, but appeared to have it’s legs buried (or broken) in the hard snow. There was nothing we could do but wonder at the long and grisly fate that awaited the poor creature.

“Perhaps he’s just resting,” suggested Haidee, giving us all a dose of glass-half-full on behalf of the beautiful-looking beast.

Comments | Queries | Reports

Done this route to Soshubetsu-dake, or others nearby? Thinking of doing it? Please post any feedback, reports, or queries here. Thanks!

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Soshubetsu-dake South Slopes Difficulty Rating

Category

Grade

Points

Strenuousness

Vertical Gain

C

30

Time ascending

C

3

Technicality

Altitude

A

10

Hazards

D

0

Navigation

C

6

Totals

49/100

GRADES range from A (very difficult) to D (easy). Hazards include exposure to avalanche and fall risk. More details here. Rating rubric adapted from Hokkaido Yukiyama Guidebook 北海道雪山ガイド.