
Switzerland · Gastlosen
Salü Jan
One of the busiest routes in the Gastlosen: homogeneous, technical climbing on beautiful fluted slabs (cannelures) that dry fast. The top third is broken by grassy ledges.
6a12 pitches380 m
Motteux Péteux (south side, beside the Dent de Ruth) · Gastlosen · Switzerland
Bail with caveatsBolting confidence: high
A long, easy and very well bolted route up low-angle runnelled limestone slabs to point 2105 m on the ridge between the Dent de Ruth and the Dent de Savigny. Only pitches 2 and 3 steepen. The belays are on comfortable grass ledges and it is the only line on the face, so you cannot get lost.
The route
L'avenue des chamois is the easy long route of the southern Gastlosen: ten pitches, mostly 4b to 4c with one of 5a, on the slabs right of the Dent de Ruth's Diehl pillar. It finishes at the Motteux Péteux (2105 m), not on the Dent de Ruth itself. The rock is solid, the line traverses a fair amount, and the bolting is so generous that recent parties skipped bolts. A newer lower start adds two harder pitches. The climbing is the simple part; choose your descent with care.
The climbing
| Pitch | Grade | Notes |
|---|---|---|
| P1 | 3c | The original first pitch, reached by a little path. Low-angle runnelled slab. |
| P2 | 4c | One of the two steeper pitches. |
| P3 | 5a | The other steeper pitch and the hardest of the original route. |
| P4 | 4c | Runnelled slab. |
| P5 | 4c | Runnelled slab; seeps can leave parts wet after rain. |
| P6 | 4b | Slab. |
| P7 | 4c | Slab and runnels. |
| P8 | 4c | Slab and runnels. |
| P9 | 4c | Slab and runnels. |
| P10 | 2c | Easy ground to the top at point 2105 m. |
Getting there
Drive to the Col du Mittelberg (1633 m), either from Jaun via the Abländschen road or from Saanen, and park there. The Jaun to Saanen bus stops at Mittelberg from May to October (daily in school holidays, otherwise weekends), and a 2026 party used it. The Grubenberg hut is 20 minutes above the car park.
From Mittelberg follow the path to the Grubenberg hut, then go up the small valley between the Amelier and the Husegg towards the col between the Amelier and the Dent de Ruth. Cross the col, descend to the foot of the Diehl pillar and cross the gully known as the Canapé de Ruth. A faint path across the scree leads to the start, on a ledge; camptocamp places it below a small hut tucked into the rock, which a 2024 party never saw. The original start is reached by a short path above the lowest rocks. Allow 1 hour to 1 hour 30 minutes.
Loading map
The point marks the crag, not the exact start of the route.
Parking
Col du Mittelberg (camptocamp waypoint 110084)
Point from camptocamp waypoint 531111 (Motteux Péteux, point 2105 m, the top of the route)
Contains the route point and parking. Opens in most mapping apps and GPS watches.
Points are compiled from published sources, with the precision stated above. They were not surveyed on the ground: check them against a current topo.
Coordinates: 46.55233, 7.23340 (crag) · Parking: 46.54664, 7.25733
Getting down
Three options. (1) Abseil, the choice recommended by recent parties: the first anchor is just behind the cairn at the top, slightly below the ridge on the Dent de Ruth side, with small red arrows. Nine abseils of about 30 m, with a fixed rope at the bottom of the third, follow a marked line back to the foot of the route; the first ones are low-angle and broken by ledges and vegetation. Allow up to 2 hours 30 minutes. (2) Over the Dent de Ruth: follow the ridge (one rock step with four bolts), climb a grade II gully with six bolts to the east summit, then descend the south side on fixed ropes and cables to the col you crossed in the morning; about 45 minutes to the summit and 1 hour 30 minutes from there to Mittelberg, exposed T5 ground that must be dry. (3) On foot down a steep grass gully near the top and a final 15 to 20 m abseil from old cord: parties in 2024 and 2026 found it steep, slippery and unpleasant and advise against it.
Retreat
Bail with caveats
The belays are cabled or chained and the route is never steep, so abseiling from part-way up is feasible. The marked abseil line starts from the top and is not always the line of ascent, and the route traverses a good deal, so a retreat from mid-route means abseiling diagonally over ledges and vegetation where ropes snag.
Partly inferred from the route facts
Safety
Sun and weather
South facing, from roughly 1800 m to 2105 m. Parties climb it from late May to early November. Seeps wet parts of the slabs after rain. The top is exposed to wind and to afternoon thunderstorms, and both foot descents need dry ground.
Sun on the wall · S-facing
Working out the sunlit hours for this month.
Sun on the wallDaylight, wall in shade● Usual season
Estimated from the wall's aspect only. Ignores surrounding terrain, gullies and the wall's exact shape. Clock times are local to the wall (Central European time), for the 15th of each month.
| Measure | Jan | Feb | Mar | Apr | May | Jun (usual season) | Jul (usual season) | Aug (usual season) | Sep (usual season) | Oct (usual season) | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean daily high °C | −3 | −2 | 2 | 5 | 10 | 14 | 16 | 16 | 12 | 9 | 2 | −2 |
| Mean daily low °C | −11 | −10 | −7 | −5 | −1 | 4 | 6 | 6 | 3 | −1 | −6 | −10 |
| Rain days 1 mm or more | 14 | 12 | 14 | 16 | 20 | 20 | 20 | 18 | 15 | 13 | 13 | 14 |
● marks the usual climbing season. Averages for 1991-2020 at about 1766 m. Area climate from Open-Meteo reanalysis. Temperatures are adjusted to the height of the crag; rain comes from a grid cell of about 10 to 25 km, and summer highs on sea cliffs can read a few degrees low. The wall and valley can differ. Data: Open-Meteo, CC BY 4.0.
What to carry
12 quickdraws and one 60 m rope for the abseils (a 40 m rope is enough if you go over the Dent de Ruth). With 2×60 m you can join some abseils. Cams and nuts are not needed. Helmet.
Derived from the route data; check it against a current topo
From climbers
Reader reports are not being collected yet. Until they are, check a current topo and the local club or guidebook publisher for recent changes to L'avenue des chamois.
Worth knowing
Open questions
Provenance
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Compiled from published sources and last verified October 2026. Bolts, anchors and access change. Climbing is dangerous and you are responsible for your own decisions: check a current topo and read the disclaimer.