Seven Mile Creek Headwaters via Cayoosh Creek

Dec 3-4, 2016

Note: This area sees quite a bit of snowmobile traffic in the mid-season. If you want to ski here, it’s probably best to check it out in the early season when the lower reaches of the Eight Mile/Seven Mile road aren’t snowmobile friendly yet. I’ve seen visited it one other time mid-winter, and found the amount of snowmobiler traffic tolerable, as in, we were able to share the terrain. See trip report from 2017 when Willy and I skied the Rock and Roll slide path.

Sam Mckoy and I spent the weekend skiing in the headwaters of Seven Mile Creek, the less traveled area between Cayoosh Mountain and Marriott Basin. With a lot of open terrain, this area reminded me of skiing around McGillivray Pass. We approached via the north fork of Cayoosh Creek, the same way you would go for the North Glacier, or exiting the Million Dollar Couloir or Swivel Rocker. We camped at the lake at 1900m on the pass between Cayoosh and Seven Mile Creek. There are short runs, and long runs accessible from here.  You will need to ski along a valley with quite a bit of overhead hazards, crossing a kilometre of avalanche paths from either side, so definitely pick a window of stable conditions for exploring this area.

This is an old photo from an autumn trip when we scrambled up Mount Marriott. Looking down from the ridge, you can see Seven Mile Creek, with the lake left of centre that we camped at. The Joffre group is off on the left, Cayoosh at centre, and Saxifrage Mountain on the right. Way in the back on the right is the Wedge group, and Mount Currie. The approach to the lake is from the other side. On the second day, we skied from the lake, up to the right, then down the north facing slope to treeline and then across to the ridge separating Seven Mile and Eight Mile creek.

The forecast was unsettled on Saturday morning, with light snow falling throughout the day. We didn’t get that early of a start, as I stayed later than I should have at my work Christmas party. A view of Chief Pascall with strong winds blowing clouds around, keeping the Joffre group out of sight.

The approach to the lake is fairly short, only 700m elevation gain, over six kilometres. The first section is on the Cayoosh logging roads, and then up the north fork of Cayoosh Creek. There was just enough snow low down to make this approach work. Stay on the south side of the creek until around 1475m, and then find a spot to cross over to the north side of the creek to avoid unpleasant steep sidehilling around tight trees on the forested ridge between the Armchair Glacier and Swivel Rock.

This flat valley at 1600m is exposed to the four avalanche paths (Rock and Roll) off the ridge separating Cayoosh Creek and Marriot Basin. We climbed up the climax slide path at the head of the valley. You could either switchback straight up or cut left across the rocky headwall and then back right. The lake is behind the forested ridge on the right.

Cutting across the headwall was a little icey for a few steps.
Firm believer in the Fatty Fitness International Program. Photo by Sam Mckoy

I don’t usually bring my big puffy. But the forecast was calling for double digit negative temperatures, for the first time this season. It usually takes me a bit of time to acclimatize to the cold. Even though the cold temperatures wouldn’t arrive until the next morning, I brought all my warm clothes for the night. Probably a bit overkill as I was too warm most of the time.

Chocolate milk stout, and my bourbon pear crumble pie. Only 2098 grams.

Sam approves, and a little shocked that I brought the entire pie up. Knowing how fit and fast Sam is, I had to go a bit lightweight on this trip. I left the oven behind. Knowing how cold it would get the next morning, this was a real struggle. I didn’t want to eat frozen pie.

Low visibility kept us on the small gladed terrain near the lake. Sam is an ACMG ski guide. Here’s his mountain conditions report from the weekend.

Rich So and I spent the weekend camping and skiing in the 7 Mile drainage on the Duffey Lake road.

Access: We started from the Cayoosh parking lot with the route heading as if to the NE glacier before veering north above ‘Rock and Roll’. Best coverage in a few years I’ve seen down low for this time of year. There is evidence of big trees having been tipped over with the recent big snows but things have consolidated now. Creeks are still open in areas. 

Weather: Friday brought 10 cm, 5 Saturday during the day and another 5cm Saturday night. Light precip and moderate winds were experienced Saturday. Winds switched to light northerlies Sunday bringing cold, clear air.

Snow conditions: Winds predominantly from the SW had distributed snow in the alpine but wind slabs remained stubborn. At 1900m in an east facing open glade, the ~Nov 20th crust is down 90 and produced no results. When given the ol ‘boot to shovel test’ it released within the crust but I wouldn’t expect anything other than a really large load triggering that layer. Above the crust we observed a right side and well consolidated up snowpack. Surface hoar was found down ~20cm mixed with stellars but the snow above was low density (fist). The odd surface hoar crystal was 4-6mm but otherwise small and fragmented 1-2mm. Windslabs exist in areas loaded on N to E aspects and may need a few days to bond. 

Terrain and avalanche activity: We chose conservative lines but covered a large amount of ground. One natural isolated windslab was observed on the immediate lee (sz 1.5) but otherwise, no recent activity. Ski conditions were great on Sunday with ~20cm of silky cold snow. Ski cuts and tests on small features provided no results.

Overall, I think the Duffey Lake area snowpack is setting up well. The thick November crust may come to haunt us later (see facet crust combo) but for now, if windslabs are well bonded, a lot of lines might be good skiing.” 

We headed over to the other side of the valley, looking for more sheltered snow.
Sam skis off the top, our run from 2100m down to 1850m, on a mostly southwest aspect. We skied into the trees lookers left of Rock and Roll, linking up good snow in straight tree shots. There are cliffs below 1850m.
Photo by Sam Mckoy
Sam cruising down the gladed run. Variable snow in the alpine, but awesome snow down here.

This weekend was really just an excuse to sit around and eat sweets. My pear pie, and sucre a la creme from Sam’s mom. I really could have just sat around here, filling myself with both treats. But Sam was only in town briefly and wanted to ski in his backyard. I guess I have a skiing problem.

Our winter shelter was fairly basic. Just a single silnylon strung up on a tree. We dug out part of it for cooking first and hanging out in. Later in the evening, we excavated the rest of the floor for sleeping.

It snowed more than I expected that evening. I ended up waking up around 11 pm, after 5cm had fallen on it. With the wind and the flat shape, it seemed like a lot more snow. I adjusted a few of the guylines, propped up the tarp with a pole, which helped with the snow shedding.

Winter camping in fun. Photo by Sam McKoy.

It didn’t get too cold that evening. I had my -12C bag, and Sam had his -20C bag. The arctic front, which would dominate the South Coast for the next two weeks didn’t arrive until late in the morning. When we woke up, it was still cloudy, with light snow. The temperature would quickly drop from -6C down to -11C. Sam pauses for a photo while skiing up to the 2100m bump above the lake.

A view of Chief Pascall, Joffre, and Matier, and the steep cliffs on Cayoosh Mountain.

There were still a lot of clouds to the south, as we skinned up this slope. It was cold that day, and our plan was to chase the sunshine all day.

Sunrise over the Duffey
Cayoosh Mountain and the North Glacier
Looking down at the lake, the slope we skied on the other side, and Rock and Roll chute, the furthest left of the four
Swoosh swoosh, Sam skis down this fun pitch.
I think I was having fun too. Photo by Sam Mckoy
The winds shifted from south to north with the arrival of the arctic air. It was mostly a calm day, but there were some windy moments. Photo by Sam Mckoy

It was an awesome morning, starting with this warmup run. The wind and new snow from last night transformed the variable surfaces into 20cm of silky fast snow. I struggled with my turns on this same slope yesterday. It was effortless this morning.

We stood on top of this long north facing run down into Seven Mile Creek. It was cold, and it wouldn’t go with our plan to ski in the sunshine. We made our decision when the clouds rolled in. It was going to be cold everywhere, and how often would we get to ski down into this valley? We skied this run and then went up to the col centre-right.

Sam  skinning up
“Go ski over there Rich!” I was more than happy to be the subject of the photo today. At the trailhead, Sam thought it was redundant for both of us to bring our bulky DSLRs. I was pretty happy that Sam took all these photos, there’s a lot of good ones! Photo by Sam Mckoy
Eight Mile Creek. Do you see all the amazing ski lines here? We came up here, just for this view.
Steep lines off Cirque Peak. Access isn’t easy. As far as I know, Eight Mile creek is quite overgrown, based on google earth imagery. These lines have been skied recently, so maybe access isn’t too bad?
Why eat gels and gu, when there is this option. Mmmm maple syrup.

The west face of Marriott Basin. A winter ascent of Marriott takes a boot pack line up this face. From Marriott Basin, you would cross over into Seven Mile valley and then contour across these slopes. The usual summer scramble up the south ridge looks fairly unpleasant. Let me know if you’ve done that. This boot pack route is just based on what I’ve read on

If you wanted to climb Marriott, this would be the way in the winter. There are also some very impressive steep lines off the north side of Marriott. I don’t know if you can ski those off the summit, and they are probably the type of lines that you want to boot pack up first.

We are here.

We went up a little further up to the shoulder for a nice run back down to the valley. The slope on the right, dropping down into Eight Mile valley was very tempting. But short winter days kept us here. It would be one more valley separating us from the car.

The skiing was pretty good.
We climbed back up to the lake and then finished off with another sunny skin up the west-facing slopes above the lake.
A view of the north glacier and steep ski options.
The Joffre Group, with Ottoman run at bottom.
A short bootpack up the ridge top
Sam with a view of Cayoosh Mountain behind. There is so much skiing to do!
And so much more skiing to do over here in Marriott Basin and beyond too!

Up on the ridge top, enjoying the sunshine in -11C. This is also the top of Honey Bronzed and Very Desirable, a ski run commonly skied from the Wendy Thompson Hut. You can make a nice circuit by skiing down the North Glacier of Cayoosh, and then climbing up to here and dropping into Marriott Basin and heading out.

Sam ripping down. Which is naturally what he does as a ski guide.
You might think I like this skiing thing. Photo by Sam Mckoy
Sam catching the last of the sun
The sun disappearing over Cayoosh Mountain

Dropping back down into Cayoosh Creek. It was at this point that I noticed a new skin track. Sam was pretty surprised that another ski party was in the area. I noticed the dog tracks and realized it was Alex and Maddy. They ended up following most of our day. We were always ahead by about 3 hours, and never bumped into each other.

The only casualty of the day. A broken Komperdell carbon ski pole. I stopped in the flat valley to extend my pole to 140cm. It just snapped in the cold as I was doing that. Update: Komperdell has a great direct repair policy. On their website, they state that they have a 3-year no questions asked, no receipt required, no cost repair. Just pay to ship the broken pole to the nearest service centre, which was in Washington. It was roughly $30 for shipping of the one pole. I wasn’t sure if I would actually get a pole back, but in just two and a half weeks, I now have a new pole! Thanks Komperdell!

A beautiful sunset to finish our ski out on the Cayoosh roads.

More of Rich’s photo on Flickr

Sam’s Photos

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