These are ideas for professionally guided outings, not route directions. Beyond the marked pistes, avalanches, cliffs and glacier hazards demand specialist judgement. Choose the day’s route with an appropriately qualified local professional; carry a transceiver, shovel and probe and know how to use them.

Icons describe terrain, skiing demands and walking, including route variants. Skiing labels are descriptive, not official grades. Open terrain describes the landscape, not the snow conditions; a missing terrain icon does not mean that feature is absent.

Aiguille Percée · Les Brévières

Open terrain
Couloirs
Skiing: Varies by line
Walking: Short walk; variants add effort

A long, scenic valley journey with wide upper spaces and tighter terrain below. The off-piste lines are separate from the marked black Sache piste, and the lower gorge makes careful route-finding essential.

Fredrik’s experience

Above the Eye of the Needle

Vallon de la Sache starts up towards Aiguille Percée, the rock formation I think of as the Eye of the Needle. The approach I remember includes a few minutes on foot above the lift station, carrying the skis on a shoulder. There are several variations from that upper area, including the classic line and Trois Murs, the Three Walls.

Three Walls is exactly the sort of name that tells you something: it has three really steep sections. The classic line has some pitch too. Once down in the valley, the skiing becomes much gentler, and you still have a very long way to go.

Vallon de la Sache · First wall

Photo supplied by Fredrik

Tignes’ answer to Col Pers

I think of this as Tignes’ equivalent of Col Pers. It is a really long run, far away from the infrastructure. It feels deserted and beautiful. The length and the sense of being out in the mountains are a large part of what makes Sache a classic.

The Mouse Hole variation

There is also an unusual rock formation near the first steep section on the Three Walls side: the little opening known as the Mouse Hole. It is a hole through the mountainside, with skiing beyond on the other side. The passage I’m describing involves climbing through and using a rope, so it is a separate technical undertaking to discuss with a guide, rather than an ordinary variation to wander into.

Many aspects, many little lines

What I like most is the number of little lines through the valley with a good combination of pitch and snow. There are so many different aspects to choose from. Even when the snow is limited, I have found that a good guide can often find something worth skiing in Vallon de la Sache. That variety is more important to me than any one line.

The canyon-side finish

The descent eventually heads towards Les Brévières and joins the black Sache piste. Before that junction, the final off-piste section needs real care. The ground immediately under your skis may not feel terribly steep, but the sides fall away steeply into a canyon. That is a place to slow down and stay very focused.

I remember an exit that involved passing beneath a safety net to reach the piste. That is a detail of the route as I knew it, not a way to bypass a present-day closure or barrier. The permitted exit needs to be established with the guide before committing to the descent.

Still skiing on the black Sache

And the run is not over just because you have reached the piste. Sache is a black run, and I have often found it extremely icy. Before joining, look both uphill and downhill and leave people already on the piste room. Do not emerge into somebody’s path or stop where you obstruct them; on hard ice, a skier coming down may have very little ability to stop suddenly.

The remaining piste descent can be hard and icy too. You have already done a long off-piste run, and your legs may not be very fresh. Take it steadily and keep thinking all the way down. This is a finish where you really need to use your head.

A major classic

For me, Sache is a major classic, rather than a run I would expect to do several times a week. It is not the final descent that decides whether the day feels complete. The appeal is the whole outing: the remote valley, its many possible lines and the chance to find good skiing over such a long journey.

The chosen upper variation, any rope passage, canyon-side exit and icy piste return all need to be considered before setting out.

Sources

A natural rock arch casts a long shadow over a snowy slope with skiers below. — Aiguille Percée

Photo supplied by Fredrik

Aiguille Percée, the landmark above the Sache sector.

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