Posted on Feb 11, 2023
0
NNENW
Posted on Feb 11, 2023
0 0
NNENW
13km

Distance

8 hours

Time

1580m

Ascent

1884m

Highest point

8.5/10
Difficulty
Snow Icon | Hokkaido Wilds
Feb-Apr

Best season

GPX

KML

TOPO

GSI

Yotei-zan's 148go-no-sawa 羊蹄山148号の沢 is a somewhat folklorish volcanic erosion gully on the aesthetically brutal north face of this impressively conical mountain near Niseko, Japan. It offers 1300m of steep, thrilling vertical descent. Of all the technical, rarely-skied gullies on this somewhat menacing-looking north-aspect mountainside, it's the one skied most often. It's one of the few gullies on this side of the mountain that offer wide open slopes, and 'goes' even lower down. A classic terrain trap, on a side of the mountain that bears the brunt of storms, this run requires patience, timing, and utmost care.

We visited this route on Apr 10, 2022

Last updated Feb 22, 2023

Topomap

Route Map

Need to know details

Location

Yotei-zan is a large free-standing conical volcano about 9km east of the bustling ski resort town of Niseko, in southwestern Hokkaido. This route starts here, on the northern side of the mountain, rather off the beaten track in a quiet farming community. If running a shuttle, it’s sometimes preferable to ascend the northeastern side of the mountain (the Kyogoku Route) and descend the north.

General notes

This 148go-no-sawa gully on Yotei-zan is arguably the most often skied (if skied at all) gully on the northern aspect of the mountain. Standing at the mouth of the gully at the crater rim, it’s not hard to see why. The upper 30% or so of the descent is gloriously wide open, relatively sheltered from the blazing winds on this side of the peak. The remaining 70% of the gully is still relatively wide and there’s nothing terribly technical beyond two easily avoidable waterfalls (take extra care earlier in the season). At no point does the run descend into type-two adventure skiing fun (although earlier in the season with less of a base things can get hairy). It’s a truly inspiring run, up there with the best in Hokkaido.

All that said, the northern aspect of Yotei-zan is relatively rarely skied. Reasons for this are mainly two-fold: 1) this side of the mountain gets absolutely hammered by seasonal winter storms, and 2) it’s a labyrinth of committing, relatively dangerous, and technical gullies. The first point means finding a suitable window for skiing the northern aspect in safe snowpack conditions can be relatively challenging. The second point means anything you do ski on this aspect will necessarily be considerably exposed to terrain trap hazards. The ridges and spurs are always wind-scoured, and narrow, so it’s either full commitment or nothing at all – other aspects on the mountain offer much more control for the skier to dial up or down the exposure. Not so here.

Hut
None
Route details

From the end of the snow clearing, head due south on the snowed-in road for about 800m before the road disappears. Continue south, and then south-southwest, climbing ever so gently. The idea is to gain the prominent spur to the looker’s left of the 148go-no-sawa gully. This spur is very wide and the start, but narrows to a very tight, wooded spur at around the 1000m mark. Depending on the snow conditions, it may be near impossible to skirt round trees and shrubs on the spur without agitating isolated wind-drifts and cornices. In this case, you’ll need to move onto the more exposed open slopes. In spring, these slopes can be very icy, so boot crampons should be assumed to be essential to carry on this route.

In relation to that point, if you have the option to run a car shuttle, it can often be more convenient to ascend the Kyogoku Route, to avoid the tight spurs on this northern aspect ascent. It’s only a short walk around the crater rim from where the Kyogoku Route hits the rim, to the drop point into the 148go-no-sawa.

After navigating the variable surface conditions beyond the 1200m mark to the crater rim, either drop into the crater for a crater run, or just focus on the gully descent. The first 100m or so of the descent may be rimed and bulletproof snow, but conditions will inevitably improve as you are swallowed further into the gully. Follow your nose as the gully becomes more constricted. There’s waterfalls/bluffs at around 905m and 800m – head high up on the gully wall to the skier’s right of these to avoid them. If you’re skiing it in the spring, the gully will be properly filled in and it’s more or less a breeze. In the earlier months (early Feb or before), you’ll need to be more aware of the possibility of ill-formed gully floors.

Once at around 600m in altitude, the gully walls drop enough to be able to gain the skier’s right ridge again – the one you skied up. Find your skin track and follow it back to the road.

Route Timing
Up | 6hrs
Down | 2hrs

In spring, this can be a sub-7hr return trip. If attempting this in deep winter, add on a solid hour or two to be safe.

Transport

Public transport:

There’s a free community bus (officially run as a school bus) that runs on weekdays from Kutchan JR train station to Sansenkado bust stop 3線角バス停, just 900m north of the trailhead (location). Members of the public are welcome to use the bus if there are seats available, including visitors – school children get right of way. The bus line is called the Suku-ru basu san keito line (スクールバス3系統). A representative of the Board of Education confirmed with us that it’s very rare for there not to be room for the public. Skis and poles etc should be packed into a covering of some sort (a simple plastic ski bag will suffice). Details of the bus are here (see Free use of school bus). As of February 2023, there was one bus in the morning (Kutchan Station 7:25am → Sansen-kado bus stop 7:41am), and three in the afternoon:

In addition to this free bus, there’s also the option of getting a taxi. From Kutchan JR train station, it’s only 9km to the trailhead – expect about 3,000yen one way. From central Hirafu, it’s about 12km, so expect about 4000yen one way. Getting taxis at the height of ski season in the Niseko area can be difficult due to high demand, so we’d recommend booking a taxi for your planned return time.

By car:

There’s no parking at the start of this route, so either use public transport, or organize a drop-off. If you absolutely must park a car, note that there is a sign attached to a power pole instructing people not to park at the end of the snow clearing – it gets in the way of snow plows. The road is very narrow, so any on-road parking will also block traffic – it’s a local farming community, so heavy machinery uses the road. Consider parking elsewhere on a larger road and making the short skin back to the trailhead.

Physical maps
Print: HokkaidoWilds.org 1:25,000 TOPOMAP+
Niseko Backcountry map: Buy on Amazon.co.jp | See companion site for more purchase options
Official Topo Map: Kutchan (俱知安) – map no. NK-54-20-3-4

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 North. Other aspects that may also be encountered while following the route outlined on this page include: Northeast, Northwest. 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 Shiribeshi area, consider looking at the Japan Avalanche Network avalanche bulletins (updated Tuesdays, Thursdays, Saturdays at 8am) or the daily Niseko Avalanche Information website. These may give extra insight into avalanche conditions in the greater area around the route.

Snow and
route safety

This is a route with very high consequences should anything go wrong. Being a classic terrain trap, avalanche consequences will be extremely high. Skiers should be very confident in the snowpack if attempting this route. Also note that any unforeseen injuries in the gully will be very consequential in terms of search and rescue – SAR teams may struggle to access incapacitated individuals, and given the height of the gully walls, rescue helicopters may also struggle to render aid. This is all to say, this is a route skiers should be very careful of, with a full understanding of the hazards and consequences involved.

Yotei-zan 148 Gully Difficulty Rating

Category

Grade

Points

Strenuousness

Vertical Gain

A

40

Time ascending

A

10

Technicality

Altitude

A

10

Hazards

B

12

Navigation

B

12

Totals

84/100

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 Yotei-zan
Onsen nearby

The closest onsen to this route is the beautiful Kyogoku Onsen 京極温泉 (location, 600yen). There’s a restaurant attached. While you won’t be able to see the line you skied, there is a great view of Yotei-zan from the outdoor baths.

Extra Resources
No extra English resources that we know of. If you know of any, please let us know in the comments.

Guide Options

If you’d like to ski this route and/or explore other Niseko areas 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. In addition to Yasuko, also see a full list of English-speaking Hokkaido Mountain Guides Association (HMGA) guides on the HMGA website here

Also worth contacting is Niseko Mountain Guides. With a lodge at the foot of Yotei-zan, they are arguably one of the most well-versed in knowledge of Mt. Yotei.

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Show Full Route Notes Close Route Notes

Route Trip Notes

It was a mild spring day, perfect for a fast and light(ish) mission up to the crater rim of Yotei-zan. Skiing the north aspect of Yotei-zan had long been on my to-do list, and today seemed to be the right day to at least go for a walk and see what I would see. Haidee had other commitments for the day, so she dropped me off at the trailhead and I got on my way.

It was a misty morning, fog low on the ground. I hoped like mad this wouldn’t be my lot for the day. The forecast was calling for clear weather even in the morning, so I held hope the mist would burn off in later in the morning.

It really didn’t take long, or much climbing to realise the mist was only a very thin veil over the lowlands. As soon as I climbed just a little higher, the enormity of what I was aiming for came into startling view.

The high upper entry to the 148 Gully was clear as day. Wide, appealing, inviting. Either side of the gully looked classic upper Yotei crust and ice. I was glad I’d packed my boot crampons and whippet heads.

I sent the drone up to get a better view of what my topomap appeared to be telling me was the most expedient route to the crater rim – up a triangle island of a ridge, narrowing at its apex to a low knife-edge spur. Looked easy enough.

I was keen to get eyes on the gully itself, so I skinned up and to the climber’s right, so I could climb up along the looker’s left side of the gully. Large trees were blocking my view, so I sent the drone up again to scout the innards of the lower part of the gully.

Overall it looked good. No indication of slides or of hairy steep gully walls I’d need to traverse along. Granted, from this perspective, it looked extremely steep. But it was wide, even this far down low. I didn’t see the two waterfalls I’d heard about, so at this point I assumed they must be completely filled in.

As I looked up from my drone’s controller screen, I spied a squirrel in a tree close by, watching the intruder and his noisy machine.

Pushing on, I eventually ran out of planar slope to zigzag my way up, and I became confined to bushwhacking my way up an increasingly narrow spine. Soon it became too narrow and bushy to continue on the spine, so I stuck out onto an inviting-looking gully slope to the left. This proved more difficult than planned, however, as the surface was very variable – dust on crust was not ideal on this very steep slope. With only my ski crampons for purchase in the slope, I found a rare patch of softer snow to stamp in a platform, and switch to boot crampons.

Once on boot crampons, the going became infinitely easier. This was especially so as I ascended well beyond the treeline into the creeping pine haimatsu zone.

Putting one foot in front of the other, I finally made it to the crater rim. The northern aspect I’d climbed up was clearly well protected from a frigid cold wind blowing at the top. I’d entertained the idea of skiing into the crater, but a thin cloud layer was adding to a lack of contrast, and I had a gully of potentially questionable surface conditions to navigate. And I wanted to get it all done by 1pm, for a lunch date with Haidee.

I snapped a few photos of other parties far in the distance across the crater, and got geared up to ski the gully.

In contrast to the pastel pall that hung over the other side of the mountain, the 148 gully was still bathed in sunshine. Thankfully so, as it had warmed up just the very top surface of the snow such that I was never scratching down the surface. Had I not had one hand holding a drone controller for much of the ski down, it would have been great fun.

The entry into the gully was very straight forward. No scary convex roll or skiing blind over cornices. Just straight into business.

True to expectations, the upper 30% or so of the gully was wide open, but it soon became more gully-like with walls soon towering overhead. It was always wide enough to carve wide turns.

The first waterfall appeared at around 900m. It felt sufficiently obvious from above, and I was able to take a high traverse to the right before taking the fall line back down to the gully floor.

Earlier in the season, I can imagine this being more of a challenge, but again taking a high right traverse should be sufficient. Later in the season as the gully walls shed more of their winter coat, things might get a bit more hairy.

The second waterfall was about 100m downhill from the first, and took up more real estate in the gully floor. I opted to launch myself off the thing on the left, but again a high right traverse would have also been OK.

For the remainder of the slalom down the gully, it was fairly straight forward. Being so late in the season, I didn’t have my usual qualms about skiing gully floors and there being great holes ready to swallow me up. 

Soon, the gully walls receded sufficiently that I was able to regain the skier’s right ridge, to link back up with my uptrack. All in all, a nice spring outing on what is arguably a classic Yotei north aspect line.

Comments | Queries | Reports

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Yotei 148 Gully Parking

IMPORTANT: There is no trailhead parking space at this route

Please respect local farming community wishes by organizing a drop-off, using a taxi, or using free public transport (see Transport notes).

Do not park at the end of the snow clearing (snow plow turnaround zone). Roadside parking is illegal and disrupts farming operations.

Printable Yotei-zan Topomap

TOPO DOWNLOAD (PDF, 11.7MB)

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Yotei-zan 148 Gully Difficulty Rating

Category

Grade

Points

Strenuousness

Vertical Gain

A

40

Time ascending

A

10

Technicality

Altitude

A

10

Hazards

B

12

Navigation

B

12

Totals

84/100

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.