Biei-dake Karasawa Sagan Ridge

美瑛岳涸沢左岸尾根

Posted on Apr 1, 2023
0
NW
Posted on Apr 1, 2023
0 0
NW
14km

Distance

9.5 hours

Time

1450m

Ascent

2052m

Highest point

8/10
Difficulty
Snow Icon | Hokkaido Wilds
Mar-Apr

Best season

TOPO
Biei-dake 美瑛岳 (2052m) is a stratovolcano just northeast of Tokachi-dake 十勝岳 (2077m) in the southern half of the Daisetsuzan Range in central Hokkaido. To the south of the summit, there are awe-inspiring views of the expansive Ponpi-sawa basin - a colossal area of jagged rock, chutes, and spurs. From the summit, there can be good skiing in shallow gullies. Lower down, broad snowfields offer expansive and inspiring views of the Furano Plains below as you descend. For the more ambitious, it's very feasible to do a loop tour, linking up Biei-dake and Biei-fuji.

We visited this route on Mar 12, 2023

The crew: Haidee, Tim, Timbah

Last updated Aug 11, 2023

Topomap

Route Map

Need to know details

Location

Biei-dake is the next peak (about 3km) northeast of Tokachi-dake in the Tokachi Range in the southern end of the Daisetsuzan National Park. This approach to the peak follows a winter-only ridge (i.e., there’s no summer trail), starting from just northeast of the Shirogane Onsen village on the northwest side of the range.

General notes

Being one of the 2000m+ peaks in the Daisetsuzan Range, Biei-dake is a natural candidate for a good old-fashioned winter peak-bagging mission. The highlight of the peak itself is being able to stand high over the Ponpi-sawa bowl. With a real feeling of exposure, there’s a precipitous drop away to the south into a mess of aesthetic spurs and gullies. The approach is relatively straight forward, and in most cases skiers will be able to access the summit on skis with aid of ski crampons. Boot crampons may also be required depending on conditions.

Hut
None
Route details

Skin directly southeast from the end of the snow clearing, past the large weather station building on the right. Follow the vague remnants of a road, marked on the topomap, until around the 700m point, where you’ll cross the snowed-in river. Continue to follow the road marked on the map to the 827m point on the topomap. At this point, you’ll head due south along the Karasawa Sagan-one ridge. Soon after gaining the ridge, there’s a stand of replanted conifers, all planted in rows. This can feel like a maze to get through, but just keen heading uphill along the ridge and you’ll be fine.

At around 930m, there’s a conspicuous clearing in the woods, but keep on heading southeast along the ridge another 100m in altitude to the sudden treeline at 1030m. Here, you’ll be standing in front of the first decent climb of the route, requiring some kick turns. Once on the gently rising plateau-like broad ridge, you’ll have views of Biei-dake in front of your and Biei-fuji to the climber’s left of Biei-dake.

As you climb, the ridge gets messier, with ridges and shallow gullies. In poor visibility, it would be relatively easy to lose sense of where you should be going without a GPS. Many of the ridges on the way up will be wind-scoured, so it’s a matter of finding comfortable pitches to zig-zag your way up – of which there are many.

Like many peaks in the Daisetsuzan Range, the final 100m or so of vertical to the summit proper can be steep and very rimed. Many skiers will find they can get to the summit on skis, but there will be times when boot crampons will be necessary – best to carry them just in case.

The descent is essentially the same as the ascent. There are, however, some nice shallow gullies to consider for the descent, which hold snow well. Keep note of these as you ascend. Even more so than the ascent, poor visibility conditions will make the descent very confusing if you’re not aware of exactly where your uptrack is. The Karasawa Sagan-one Ridge is broad, featureless in places, and has lots of smaller ridges. Make sure you know where you are at all times.

  • Biei-fuji Link-up: For an extra hour or so of effort, its possible to make a loop back to the trailhead via Biei-fuji 美瑛富士 (1888m). Direct from the Biei-dake summit, ski the northern Biei-dake slope to around 1700m, towards the 1716m saddle. From there, climb the 150m or so of vertical up to the Biei-fuji summit. From the Biei-fuji summit, drop down the north-northeast slope, slowly wrapping northwards to meet up with Biei-fuji’s Karasawa Ugan-one Ridge. Follow the Ugan-one ridge to the Biei-fuji summer trailhead at around 830m. From there, head west along the road, across the Karasawa-gawa 涸沢川 to link up with the lower portion of the Biei-dake uptrack.
Route Timing
Up | 7hrs
Down | 2hrs

The timing above of 7hrs up and 2hrs down applies to a relatively leisurely spring tour with no trail-breaking to speak of. In deep winter conditions, even fit parties should allow at least 10 hours to be on the safe side (pre-dawn start should be assumed a must).

Transport

Public transport:

It’s possible to get within 450m of the start of this route using the public bus from Biei JR train station – Shirogane-yaeijoumae 白金野営場前 bus stop (location) is just down the road from the end of the snow clearing. Google has timetabling information, so just get public transport directions on Google. It’s about 30 minutes on the bus from Biei JR train station to the Shirogane yaeijomae bus stop.

By car:

There is no official parking area for this trailhead in winter, so skiers will typically park on the side of the road or at the end of the snow clearing. Make sure to park as far to the side of the road as possible, so as to not block traffic.

Physical maps
Official Topo Map: Shirogane-onsen (白金温泉) – map no. NK-54-7-8-1

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 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 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

This is a very remote route in winter, and as such you’re unlikely to see anyone else on the route. Skiers should be even more self-reliant and self-sufficient on this route than peaks further south in the range. Be aware that the alpine zones around this area are very bad places to be in inclement weather. 2000m in the Daisetsuzan National Park is a very harsh environment, with temperatures and conditions similar to 3000m peaks elsewhere in Japan. Plan accordingly, and make the call to keep to lower elevations in the face of an unfavourable weather forecast.

Biei-dake Karasawa Sagan Ridge Difficulty Rating

Category

Grade

Points

Strenuousness

Vertical Gain

A

40

Time ascending

A

10

Technicality

Altitude

A

10

Hazards

C

6

Navigation

B

12

Totals

78/100

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 Biei-dake
Onsen nearby

Our pick of onsen in the area is the Shorigane Yumoto Onsen 白金湯元温泉 (location, 1000yen). The outdoor bath is beautiful, perched above the Biei River and Shirahige Falls (although you can’t see the falls from the onsen).

Extra Resources

For route information in Japanese, see p. 197 in 北海道の山と谷3 (ISBN: 978-4-8328-1906-5).

Guide Options

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

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Show Full Route Notes Close Route Notes

Route Trip Notes

By Haidee Thomson (photos by Rob Thomson)

“We need to make an alpine start” advised Tim, so after cooking up a chili con carne-inspired dinner with Timba, Rob & I drove to Shirogane michi-no-eki to sleep in our vehicles close to the trailhead. Waking brisk and early we then drove the short distance to the trail head where we met up with Tim & Timba. Biei-dake is a fairly high mountain so we took our ski crampons expecting some ice at the top. We decided to leave our boot crampons to save on weight, in retrospect I wish I had packed them.

The moon was bright and dawn was quick to bring the morning light as we set off. We walked along a mostly flat road through the forest until we dipped into the river-bed to cross over a snow bridge. The early morning start did nothing to dampen the continuous conversation of friends catching up on life as skins slid over the snow. Finally, we came to a clearing and were confronted with an abrupt but short uphill slope, the first kick turns of the day ensued and once on top, we were treated to incredible views of the surrounding mountains.

We were on a plateau so the flattish stroll continued as we enjoyed the views. I pointed out some small avalanches far over on our left which had me concerned about stability. However Tim & Rob assured me that those slopes were much steeper than the ones on our route. The walk up was fairly easy but very hot and long in the full sun. The upper stretches were more challenging as rocks and alpine pines poked through the icy snow and the gradient increased. We clicked on our ski crampons which increased our grip and security underfoot.

As we approached the summit, I realised that I should have brought my boot crampons, I was reaching my limit on the skis. The thought of slipping and falling was starting to fill my headspace, as we stomped away at ice and snow to make high stakes kick turns on the ridge. 

At one stage I caught a glimpse of the imposing view over the other side of the ridge, dramatic rock faces falling vertically down further than I could see. Rob coaxed me a bit closer to the summit, and took off his skis to make the last few steps, however, I was feeling extremely intimidated by our height and the drop offs, so I sat just below the summit and found comfort in my peanut butter and jam sandwiches. The guys were not having any problems and happily sat at the summit enjoying the views.

Tim & Timbah skied down to Biei-Fuji to climb again and make a loop back to the cars. Rob & I skied down a widish couloir avoiding the rocks, which were not as problematic as I had imagined they would be as we were climbing up. Once down from the intimidating zone, I relaxed a little as we stopped to spot Tim and Timba over on the opposite mountain, just spots on what looked like a very steep face making their way up to the top. We were in radio contact with them, so we checked in every so often on each other as we made our way down the respective mountains.

The snow was surprisingly fast and consistent, so the long ski down was an enjoyable affair. We arrived at the cars about 30-60 minutes before the others, so enjoyed a hot drink as we waited. After everyone was back together, we hurried over the Shirogane Onsen hotel to warm up and soak away the pains of the day. So now I only remember the enjoyable parts, hahaha lived to climb another mountain, yay!

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Biei-dake Karasawa Sagan Ridge Difficulty Rating

Category

Grade

Points

Strenuousness

Vertical Gain

A

40

Time ascending

A

10

Technicality

Altitude

A

10

Hazards

C

6

Navigation

B

12

Totals

78/100

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.