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Rainbow Mountain Heli Assisted Touring

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Text by Lee Lau. Photos by Lee Lau and Sharon Bader unless otherwise noted

Rainbow Mountain (2314m) is a peak just west of Whistler. It can be climbed fairly easily on skis or snowshoes or by foot and even with bikes in summer. The lower flanks of Rainbow are sled-accessible. To put it mildly, Rainbow is not exactly isolated.

Commercial operators actually run heli-biking trips off Rainbow in summer. While it is entirely possible to tour up to Rainbow from valley bottom on skis (I had tried unsuccessfully last year via the TwentyOne Mile drainage), it can be a bit of a slog if snow in the Whistler valley floor is in poor condition. I had heard that Rainbow could also be heli-dropped in winter. When Jeremy expressed interest in organizing a group for a heli-drop, I couldn't resist and started gathering information and making plans.


rainbow heli trip

The group getting the helicopter safety briefing from Greg


Pretty consistent snowfalls in Whistler over the early part of the season had made it hard to find weather windows to tour high in the alpine. A persistent weak layer in the snowpack resulting in several large avalanches in the vicinity of the resort had also complicated high-alpine travel. When a fat high-pressure system finally developed over the Coast Mountains we realized that now was the time to do the heli-drop. As Thursday approached, the improving snow stability picture and anticipated good visibility meant that this heli-drop was on.


 

resort and clouds

Views of the resort poking through the inversion layer


panorama

Rainbow Mountain atop the inversion layer


We had reserved Blackcomb Helicopters mid-week. Unfortunately a temperature inversion had set in for Thursday morning when we were set to fly. However, our pilot was cautiously optimistic that the weather would improve; his confidence was borne out when a nice size weather window developed.

Greg flew us over our planned exit via 19th Mile Creek, over the E face approach giving us a good look at the NE face glacier descent route. As we approached the summit plateau, a view of a massive pile of avalanche debris from a sizeable slide that looked cornice triggered, made it easy for us to make a decision to NOT ski the E face.


NE Face

Pictures of a large crown approaching Rainbow Mountain from the E/NE


helicopter take off

The heli-drop is one-way. Make sure you have all your gear before they leave.


The heli-drop is one-way. Blackcomb Helicopters operates merely as a taxi-service and offers no route-finding or guiding services. It is possible to line up a guide separately for this trip if you feel that you need one (use the links I provide below or contact the ACMG).

Despite my earlier comment that Rainbow is "not isolated" bear in mind that search and rescue response in support of an accident or injury would probably take some time. Note also that cell phone coverage from the peak of Rainbow is patchy at best and you not rely on getting and maintaining coverage. Even though Rainbow is deceptively close to the resort, the descent route is glaciated and the way off the peak via the standard NE route descent is hardly a no-brainer.


peak shot

Looking back from whence we came – from L to R: Ryan W, Jeremy R, Kerri G, Sharon B.


It's always a treat to spend quality time in the alpine. The views were magnificent of course and so was the weather. Due to the inversion, winds were very light and temperatures mild. The last significant weather event had been a typical wet coastal storm with high SE winds depositing snow that had then turned to wind-slab on some aspects and elevation. We looked down south to the windward slopes but decided to pass on skiing rimed boilerplate. Instead we elected to ski off the peak down via the NE glacier.


glacier skiing

Ryan found some decent bits of boot-top powder on the top parts of the North Glacier.


Surprisingly the strong SE winds from the storm earlier in the week had left us with some snow on the higher elevations of the Rainbow Glacier. Unfortunately as we got a bit lower on the glacier, windslab made our lines a bit more tricky – the only fortunate thing being that the slab was supportive so that snow conditions were firm rather then variable. Route finding off the NE glacier was not difficult; it was nice to have had the opportunity to view the face from the helicopter before we dropped in.


skiing down to lake'

As we descended the lower parts of the NE glacier, the slope steepened and the snow became slabby.


Determined to make a ski day out of it we dropped down to a bowl at about 1600m bordered by a ridge that looked like it offered good snow hopefully protected from wind-effect. This turned out to be such a good call that we did a couple of laps before leaving. It's a beautiful protected little bowl with 200 – 250m shots on 35 degree slopes. Runs are wide enough that our medium-sized group didn't come close to tracking out the slopes. Due to the inversion, temps at this elevation were a bit colder then up top in the alpine keeping the snow reasonably light.


Rainbow

We cruised into the bowl to the unnamed lake N of Rainbow and found some NW facing slopes that promised good skiing. Here's the group on the ridge above the bowl taking in the view.


Sharon skiing powder

Sharon found the promised powder.


Kerri skinning

Good enough for a second lap. Unnamed peaklet N of Rainbow Mountain proper and the N glacier is in the background


Skinning and skiing

Nice angle approach to the top of the bowl which we skied. The other side of the bowl (on the NE side) was tracked out by sleds.


Kerri skiing

Kerri getting deep in the snow on our second lap


The exit from the Rainbow area itself is not complicated. Basically we took a SE course following the 19 Mile Creek drainage keeping an eye on the altimeter until we intersected the Flank Trail system at about 1100m. The creek walls are not steep and there are no significant cliff-bands to avoid. Trees are also nicely spaced and if snow quality is good (as it was for us) the tree-skiing is actually quite a treat.

The only tip I might give you is that the descent flattens out as you approach the Flank Trail. At about 1150m elevation or so, put on your skins to make it easier to cross the flat section to then gain the Flank Trail. The rest of the ski – out back to Alpine Meadows is trivial if a little tedious and alder-ridden.


Slog out

Skiing out involves an exit through nicely spaced trees in the 19 Mile drainage. This is the flatter portion right before you hit the Flank Trail exit to the Alpine Meadows subdivision.


Rainbow Elevation

Elevation profile for the trip


Google Earth rainbow

Google Earth profile


heli map

Map of the descent.
Larger Map Available Here.
 

Useful links:

 

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  1. LeeLau

    No. You’re right rosslander. You guys have a good thing going with access to Plewman, Old Glory, Elgood etc all so close to town. That doesn’t even cover the access you have within one hours drive. Stew could blog 24/7 and you would never get tracked out. Consider yourself lucky

  2. LeeLau

    bro-brahs like powpow8 and rosslander will be disappointed that Callaghan East FSR now gives you access to Rainbow, Metal Dome etc under human-power.

    So one more “secret stash” is gone as the sledders, heli-tourers and heli-skiers will have to share the pristine slopes of Rainbow North with dirtbag ski-tourers.

    Access from Hwy 99 by going up the main Callaghan access to the valley and nordic center. Park at the Dogsled parking lot about 5km down the road which is at about 700m elevation. You still have quite a bit of climbing but it’s all worth it to turn Rainbow into moguls.

  3. LeeLau

    powpow8. There are two guidebooks pending that will describe routes in the Sea-to-Sky and will describe many “secret stashes”. Neither I nor doglotion are publishing those books. I imagine that you will have those same concerns about these books. I imagine that you told Brian Finestone the same thing to his face when he wrote his guidebook.

    I described one of many routes off Rainbow. That route was a very conservative route. If you think that heli-dropping Rainbow is a secret then we’ll just have to agree to disagree

  4. powpow8

    Shame on you.  Why do you have to brag and tell everyone about your "Rainbow" adventure.  Let people figure it out for themselves.  You guys are sell outs and now the locals who have always gone to rainbow for years will be skiing bumps.  You guys are worse than the guys who wrote the books that tell every secret stash on the Whistler and Blackcomb mountains.  Now some yahoos will go up there have an accident and ruin it for all of us.  Shame on Doglotion for posting the article.  Have some pride in exploration and ski pow but don't tell.  Save it for those who earned it!! Bad Karma!


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