A loop through the Serre-Brion and Morta passes starting from Bourgmenu

A vertiginous and rarely-taken loop, where you come across ibexes and chamois at every hairpin bend. Make sure you always have a helmet (ibexes love to send stones flying), as well as crampons and an ice axe until late in the season, as névés remain in place fairly long within the steep Serre-Brion couloir. It is best to start your hike early in the morning so that snow is still hard when reaching this couloir.

Technical sheet

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Caution, this route is Very difficult

This route requires a long and/or intense effort, either because of the difference in altitude or the distance involved, or both. In certain situations, there is also the possibility of technical and aerial sections.

  • Walking
    Activity: Walking
  • ↔
    Distance: 12.69 km
  • ◔
    Duration according to author: 6 hrs 
  • ▲
    Difficulty: Very difficult

  • ⚐
    Return to departure point: Yes
  • ↗
    Vertical gain: + 1,326 m
  • ↘
    Vertical drop: - 1,326 m

  • ▲
    Highest point: 2,001 m
  • ▼
    Lowest point: 1,023 m

Photos

Description of the walk

Park your car along the D242 (there's room for 3 or 4 cars), near the sign for "Abri de la Peyrouse".

(S/E) Walk up the paved road WNW for 50m, then make a left on a wide path marked with yellow and green signs. Ignore all trails branching out, and follow this path up to the "Grand Clos" meadow. The first rays of sunshine should start shining on the top of the Vercors cliffs if you have left on time.

(1) The path keeps climbing steeply going straight West under a beautiful canopy of tall trees.

(2) At a large isolated boulder (which probably came down from the cliff), leave the large path to turn left on a smaller trail that zigzags through the forest up to the Peyrouse shelter ("Abri de la Peyrouse").

(3) With your back facing the shelter entrance, take a right (SW) on a path climbing towards the foot of the cliff (the "balcon Est du Vercors" main trail heads South and is on your left).
After a few sharp turns , the path (E) reaches a meadow - "Pré de Serre Brion" - and the cliff base (1850m).

(4) Put your helmet on and, depending on time of the year, slide your ice axe under the shoulder strap of your backpack: from then on, the trail gets more challenging. A few steps on the rocks lead you to the staggering ledge (B) heading due South towards the foot of Serre-Brion pass. If you come across névés, don't hesitate to climb around them through easy rocks towards the ledge.
Go South on that ledge. After a prominent shoulder, the path goes down for a few metres just before hitting the base of the Serre-Brion couloir. As the slope is fairly steep (30º to 45º), put your crampons on and keep your ice axe at hand before climbing up this couloir. Mid way up, it divides in 3: follow any of the 2 left branches heading South to exit at the lowest point on the ridge, i.e. Serre-Brion pass.

(5) Once your crampons and axe are safely stowed away, head North along the ridge until you reach the Morta pass (sign). Try to go through each intermediate summit, as they offer a range of stunning views. In particular, just before reaching Etoupe pass (about half way between Serre-Brion and Morta passes), turn back to see the Œil du Gorille (C), a small arch within the steep rock face of the "Rochers de la Peyrouse".

Both Etoupe and Morta passes are well marked and it is hard to miss them as long as you follow closely along the crest of the cliffs; you can't get lost, even if there's a bit of fog.

(6) At Morta pass, go down, due East. You may need to put your crampons on again, in case snow is still present and hiding the path. If this is the case, a safe process is to chimney down with your back to the rocks and your crampons in the snow.

(7) After going down through a few hairpin bends, go due South, back to Peryouse shelter.

(3) From there on, retrace your steps back to your car (S/E).

Waypoints

  1. S/E : km 0 - alt. 1,023 m - D242 car park
  2. 1 : km 1.27 - alt. 1,270 m - Grand Clos
  3. 2 : km 1.6 - alt. 1,368 m - Large rock fall
  4. 3 : km 2.83 - alt. 1,587 m - Abri de la Peyrouse (1575m)
  5. 4 : km 4.22 - alt. 1,828 m - Serre-Brion meadow
  6. 5 : km 4.76 - alt. 1,939 m - No Serre-Brion
  7. 6 : km 7.8 - alt. 1,866 m - Pas Morta
  8. 7 : km 8.46 - alt. 1,668 m - Bottom of the Pas Morta laces
  9. S/E : km 12.69 - alt. 1,023 m - D242 car park

Practical information

Equipment:

  • at a minimum you'll need a helmet.
  • until end of July, unless after a heat wave, bring your crampons and ice axe to climb the Serre-Brion couloir.
  • don't forget your camera or phone to take plenty of pictures of chamois and ibexes.
  • beware of the cold, especially at the passes: until end of June, mitts and beanies are more than useful.

Bivouac:

  • if you're not an early bird, you can sleep at the comfy Peyrouse shelter (open access).
  • do not oversleep though, the ibexes won't wait for you.

Water:

  • there are no water holes or springs - as often in the Vercors - along the trail.
  • until June, you can melt névé snow for tea, but during summer, better bring all the water you need.

Dogs:

  • Beware: dogs - even leashed - aren't allowed on the Vercors plateaux.

In the nearby area

Unless walking eyes wide shut in a a large formation behind a brass band, you cannot fail to see chamois and ibexes on the trail, provided you leave Bourgmenu at or before dawn.

Pictures of my outing on April 19, 2017, along with a short video are indicative of what you can expect along the way.

Reviews and comments

4.4 / 5
Based on 5 reviews

Reliability of the description
4 / 5
Clarity of route map
4.2 / 5
Route interest
5 / 5
Monsieur C
Monsieur C

Overall rating : 4 / 5

Date of walk : Nov 03, 2024
Reliability of the description : ★★★☆☆ Average
Clarity of route map : ★★★★☆ Good
Route interest : ★★★★★ Very good
Busy trail : No

A magnificent hike, the weather was perfect and there was no more snow at this time of year. The ascent of the Pas Serre Brion is done with your hands without too much difficulty, provided you're vigilant. I went up on the left rather than the right. The hardest part for me was getting onto the ridge because it's hard to follow the trail, and off-piste can quickly put a strain on your ankles on this type of ground. In my opinion, poles are essential for the descent from Pas Morta. The hike took 4h30 to complete, or 6h15 with the photo breaks, wildlife watching and the picnic.

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FlickaPatsy
FlickaPatsy

Overall rating : 4 / 5

Date of walk : Oct 20, 2024
Reliability of the description : ★★★☆☆ Average
Clarity of route map : ★★★★☆ Good
Route interest : ★★★★★ Very good
Busy trail : No

A beautiful aerial loop hike on a day when the weather was very fine. The scenery is splendid and the views magnificent. Herds of ibex and chamois on the crests of the Pas de l'Etoupe. In my opinion, it's easier to see the eye of the gorilla from the foot of the cliffs before point 4 (by turning round towards the pas de l'Etoupe) than from the ridges (because it's not always easy to find your bearings and turn round in the right place).
This is a hike for experienced hikers, as there are still some tricky sections and falls can be unforgiving. Not suitable for children, people prone to vertigo and/or in fog.
There were only 2 people on the ridges (apparently not on the same hike) and, on the way back, 7 hikers who were going to spend the night in the shelter at La Peyrouse.
For us, the only difficulty was the climb to the Pas de Serre Brion, where we took the rightmost route, as indicated, which didn't seem to be the right one (as we realised once we were on the ridges). Fortunately, I had a rope and a few karabiners, so I was able to belay and reassure my wife. Despite a bit of research on photos and videos, we're still not sure of the right route --> perhaps we need to be more specific in the guidebook.
We almost went down via the Pas de l'Etoupe, which no longer seems to be signposted by the nature reserve (or maybe we didn't see it). In view of the descent, we didn't insist and studied the map and IGN apli better and continued on our way towards Pas Morta.
In short, a great day out and thanks to the creator of this wonderful hike.

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bader
bader

yes indeed, it's on the right and not on the left.

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bouvierjr
bouvierjr ★

Thanks for the feedback, I climbed the Pas de Serre Brion twice last autumn (both downhill and uphill) and didn't see any noticeable change, so the landslides must have happened this spring. I took the couloir on the right at the top of the Pas (contrary to the topo) because it seemed more natural. I'll change it after checking.

As for the distance, it's calculated automatically by Visorando, so I can't change it.

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bader
bader

Overall rating : 4 / 5

Date of walk : Jun 26, 2024
Reliability of the description : ★★★★☆ Good
Clarity of route map : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Busy trail : No

Having already done it in 2020, there were some changes on the route due to the crumbling of some passages caused by bad weather, particularly to access the pas de Serre Brion where it's really climbing.
Otherwise, on the total distance my pedometer showed 19 km covered and not the 13 km announced.

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bader
bader
• Last modified:

Overall rating : 5 / 5

Date of walk : Sep 18, 2020
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

We had slept at the Peyrouse hut and early in the morning we watched the sunrise.
The ridge is quite simply exceptional, it's nothing but pleasure, this hike can be classed as very difficult and doing it over one day requires a lot of skill, I strongly recommend doing it over a day and a half as it becomes easier.

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JCParavy
JCParavy
• Last modified:

Overall rating : 5 / 5

Date of walk : Oct 16, 2021
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

It was a fine autumn day on Sunday, and we took advantage of it to complete a route we'd been looking at for a long time: this traverse of the Rochers du Ranc Traversier and the Rochers de la Peyrouse, from the Pas de Serre-Brion to the Pas Morta, from Bourgmenu (St Andéol).

With no firn at the time, the two passes go well, the main risk being falling rocks (from other hikers or ibex);
The main risk was falling rocks (from other hikers or ibex), but there were plenty of sheep, goats and male ibex on the ridge.

At the foot of the Pas Morta, I didn't return to the Abri de la Peyrouse as indicated in the topo, preferring instead to take the easy-to-fall scree slope of Casse Longue below the Tours du Playnet, which leads to the Grandes Tartices and then turn off towards Bourgmenu.

Yours faithfully

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Mimizen38
Mimizen38

Thanks for the information

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bouvierjr
bouvierjr ★
• Last modified:

Good evening,

I've got into the habit of carrying an ice axe with me whatever the season: on steep slopes, even on grass, it provides a much more useful and safer anchor than walking poles. In addition, the outings to the top of the cliff on the east balcony are very steep, and the summit cornice often remains in place for a long time, until the beginning of June; I haven't been out again this season since the confinement, so I can't give any verified information.

As for the danger, the passage between (4) and (5) does not allow a fall, which would be fatal: the strap passes over a sloping bench above high rocky bars.

Happy hiking! - jr

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Mimizen38
Mimizen38

Hello,

When can we be sure that there will be no more névés? (I suppose that at this time of year, even if there's no more snow at the Crête de Crocs, there must still be some névés).
... And when there are no more névés and the weather is dry, is there still a risk of a serious fall?

Thanks in advance

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