The Baroness’s Trail

Brought back into the spotlight by Pascal Sombardier’s publications, the Sentier de la Baronne crosses the Petites Charances, a suspended ridge at the foot of the western face of the Dévoluy (stretching from the Grand Ferrand to the Obiou), above Tréminis.
It is a long and challenging route, not necessarily very technical, but one where you must take great care with every step.
The view stretches westwards, from the Chartreuse to Mont Ventoux, taking in the eastern face of the Vercors.

The scree from the summer of 2024 makes this route extremely difficult and challenging.

Details

n°2436580
Creation:
Last update:
Last review:
  • Walking
    Activity: Walking
  • ↔
    Distance: 9.88 mi
  • ◔
    Duration according to the author: 10 hrs 
  • ▲
    Difficulty: Extremely difficult

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 4,718 ft
  • ↘
    Descent: - 4,718 ft

  • ▲
    Highest point: 7,979 ft
  • ▼
    Lowest point: 3,468 ft

Photos

Description of the walk

The start is 500m past the hamlet of Le Serre in Terminis, which can be reached from Clelles (via the Col de La Croix-Haute road) or from Mens via the Col de Mens.
(You can also set off from the Boutari car park in the Ebron Valley, then join the ascent path as described at the end of the guide to return to Le Serre).

(S/E) Leave the track that heads right towards the Grotte de la Fétoure and take the forest track opposite, which climbs up to Champ la Selle.

(1) Head straight up, veering slightly to the right twice, following the ‘Yellow Planes’ signposts.
The path eventually emerges from the forest and climbs up a ridge where the memorial stone and the wreckage of the plane that crashed here are situated.

(2) From the memorial, at the foot of the Grande Casse, cross the scree to the left and follow a path up through the steep woods of the Poët de Plantin. On emerging from the forest, at the edge of the ravine, the path reaches a clearing where a chalet once stood.
N.B. It is also possible to head straight up the ridge towards the memorial until you reach the level ‘tour de ronde’ path: from there, turn left.

(3) From this clearing, head right through the grass to rejoin the ascending path as it enters the woodland once more. It joins the old patrol path, which you should follow to the left along level ground.
Before reaching the scree, a path branches off to the right, heading back up in wide switchbacks into the Seia mountain pasture.

(4) From here, the long, north-bound, ascending traverse begins; after crossing an initial ravine with unstable scree, it climbs the often grassy slopes of the first section of the Petites Charances (the easiest part).
The path in this section comes to a halt at the cliffs carved out by the upper Ebron basin: the route continues higher up.

(5) A switchback allows you to climb up to the pass leading to the upper part of the Petites Charances.
The path gradually becomes less steep but much more exposed, crossing grassy, rocky or scree-covered slopes – all of which remain steep – whilst crossing ravines that are often rockier (use your hands for support here).

The ridge is not far away, near the Cols du Courtet, du Nid and Col de la Cavale. But it is closest at the foot of the Col du Portail.

(6) From the path, climb for 10 minutes to this pass via a corridor of ‘devoluard steps’

(7) For a view of the eastern face: Combe de la Prison and Tête de la Cavale.

(6) Head back down the Sentier de la Baronne, which crosses a first ridge at the same level, then, at the start of the descent, a second ridge, 20 metres above a narrow, perforated rock slab.

(8) Descend through the scree to reach a grassier ridge leading down from the Tête de la Cavale. Then follow a series of cairns; at the last one, make sure not to miss the descent into the valley to the north.

(9) Join the main hiking path coming from Rochassac.

(10) From the junction with this path, head back south-west towards the Courtet mountain pastures.

(11) The path descends via wide hairpin bends (alternative route described in the practical information section).

Caution: do not descend too far down the Saint Baudrille-et-Pipet slope, but veer left at the end of the hairpin bends (south-west direction) to ensure you cross over onto the Tréminis slope.
The path is marked in yellow as you approach the altitude of 1,717m.

(12) Turn left towards the south-east to cross over onto the Sous-Courtet slope (forest ranger’s house) and, via switchbacks through the Pravert forest, quickly lose altitude to reach the Pravert torrent and its RTM structures.

(13) A track for machinery to ascend is available from here, but its dusty hairpin bends are conveniently bypassed by the yellow-marked ‘Ebron route’ path.

(14) Cross the Ebron and, after two bends, head straight down the old track, which cuts across the hairpin bends of the new track.

At an altitude of 1,190 m, turn left to descend a signposted forest track, which follows the Combe Amare, to a junction by a stream (1,140 m).

(15) Continuing straight on would lead to the Boutari car park. To return to the area above Le Serre, turn left and head up an old track, which has been destroyed by flooding: from here, you’ll be following a path that is now heavily eroded and littered with rocks and pebbles carried down by a flood of the Torrent des Chaberts.

Climb up to the old ford, now unrecognisable, to cross the torrent and rejoin the forest track on the left bank, which remains in good condition and descends straight down to meet the ascent route.

(1) Turn right onto this path to return to the starting car park (S/E).

Waypoints

  1. S/E : mi 0 - alt. 3,468 ft - Above the Serre
  2. 1 : mi 0.2 - alt. 3,602 ft - Common junction for both the outward and return journeys
  3. 2 : mi 1.13 - alt. 4,669 ft - Cap Brooks aeroplane memorial
  4. 3 : mi 1.56 - alt. 5,318 ft - Platform at the old chalet (La Seia)
  5. 4 : mi 2.45 - alt. 6,316 ft - Start of the challenging Petites Charances route
  6. 5 : mi 3.23 - alt. 7,106 ft - Cliffs of the Ebron basin: end of part 1
  7. 6 : mi 4.27 - alt. 7,900 ft - Foot of the Col du Portail
  8. 7 : mi 4.3 - alt. 7,940 ft - Col du Portail (2476m)
  9. 8 : mi 4.57 - alt. 7,782 ft - The final ridge to cross before the descent
  10. 9 : mi 4.78 - alt. 7,290 ft - Grassy ridge leading down to the Rochassac path
  11. 10 : mi 5.06 - alt. 6,926 ft - Hiking trail from Rochassac
  12. 11 : mi 5.35 - alt. 6,696 ft - Summit: Courtet mountain pasture
  13. 12 : mi 6.62 - alt. 5,600 ft - Crossroads turning towards Pravert
  14. 13 : mi 7.5 - alt. 4,629 ft - Pravert Torrent
  15. 14 : mi 8.09 - alt. 4,245 ft - Ébron (torrent)
  16. 15 : mi 9.04 - alt. 3,599 ft - Junction with the path leading up to Torrent des Chaberts
  17. S/E : mi 9.88 - alt. 3,468 ft - Above the Serre

Notes

Alternative route: Once you reach the mountain pastures, you can follow the grassy ridge and then through the forest from point (11), rejoining the path further down after point (12).
Warning: the route is exposed over long stretches and is therefore only suitable for hikers with sure-footedness. Not suitable for those prone to vertigo or for children.

Avoid in wet weather and on slippery ground; in spring, wait until the snow has melted.

Otherwise, in good conditions, no specialist equipment is required, though you will need to use your hands a little in certain sections. Walking poles are useful, and an ice axe may be advisable for added confidence.

Worth a visit

The trail is cited as one of the most spectacular; this is no myth but a reality. It is impressive to look at, but once you set off, you’ll be surprised at how easily you get through it without any major difficulty.

The view is unobstructed from north to south, whilst to the east you can see the Chartreuse, Vercors and Diois ranges, stretching as far as Mont Ventoux, and of course the western slopes of the Dévoluy: the Grand and Petit Ferrand, the Tête de l’Auget, the Rougnou, the Nid and the Tête de la Cavale, followed by the Bonnet de Calvin.

Legend has it that a Baroness of Tréminis had this path cut into the slopes overlooking the cliffs to allow shepherds and their sheep access to the pastures of the Petites Charances, which she owned.

Reviews and comments

4.7 / 5
Based on 6 reviews

Reliability of the description
4.7 / 5
Ease of following the route
4.5 / 5
Route interest
4.8 / 5
Jeanloic
Jeanloic

Overall rating : 5 / 5

Date of your route : Jul 24, 2026
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A magnificent and spectacular hike, but one that has to be earned. The path is very challenging, at times exposed, requiring caution as the slightest misstep could be fatal (as is often the case on challenging hikes). The path is well-marked and clearly visible from a distance; it looks impassable, but in fact, you’ll be surprised at how easily you can get through it. The difficulty is compounded by the two scree slopes: the first is fairly easy to cross by descending into the scree, whilst the second is more challenging (I got past it by climbing the cliff horizontally). But what a sense of achievement to have completed this extraordinary hike. It took me 7 hours and 30 minutes. Many thanks to the author.

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Dibona38
Dibona38

Overall rating : 5 / 5

Date of your route : Aug 26, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Hello,
I did this hike a year after the last comment, and the two scree slopes are still the most difficult part of this route. With the passage, a path has formed, and the fact that you have to descend makes it difficult but possible to avoid.
Of course, I must emphasise the difficulty of this hike. Falling is prohibited as it would be fatal on more than half of the crossing.
This route is extremely easy to follow, as there is a clearly visible path and nothing else.

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fruit23
fruit23

Overall rating : 4.3 / 5

Date of your route : Aug 20, 2024
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

Hello,
The path is impassable as two rockfalls have recently occurred between points 4 and 5. The first can be avoided by descending into an extremely unstable scree slope, quickly crossing the scree and climbing up a wet and slippery grassy slope. The second is impassable unless you are prepared to take extreme risks!
Given the scale of the rockfalls, restoration seems highly problematic.
Note that all the cairns have been destroyed, particularly at the changes of direction.
I think potential users should be warned of the extreme difficulty they will encounter and that the use of a rope may prove beneficial.
Kind regards
Jean-Pierre ORANGE

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GIELLY Bruno
GIELLY Bruno

Overall rating : 4.3 / 5

Date of your route : Aug 14, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

A challenging route with some technical sections. Ropes aren't strictly necessary, but you'll need to stay focused for half the route.

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Delphine2519
Delphine2519

Overall rating : 5 / 5

Date of your route : Aug 12, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A very challenging hike,

Very well signposted, with cairns (not sure of the spelling), breathtaking scenery (!!!)

Bring walking poles and possibly a helmet (chamois can knock stones loose...).

Good physical fitness is required.

In my opinion, between points 5-6 and 7, avoid looking down if you’re prone to vertigo!
Rated 10 hours, I did it in a leisurely 7 hours (yes... I couldn’t believe my eyes ^^)
You’re going to love it!
Enjoy the hike, friends

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grandin
grandin ★

JCParavy

Thank you for that explanation. There are indeed no intellectual property issues.

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JCParavy
JCParavy

I don’t have the book by Pascal Sombardier mentioned here, so I’m not familiar with the text.
However, I did mention in the introduction that this route had been updated by Pascal Sombardier, who discusses it in his blog, which is always worth a read.
The guide published on Visorando was written solely on the basis of my solo hike on 16 August 2019.
The track is the one I recorded, manually corrected: it is obvious that, given the terrain, it must be more or less identical to those published elsewhere, except perhaps for the start and finish points, the locations of which may vary.
I do not believe that this publication infringes any intellectual property rights in any way.
Kind regards.

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grandin
grandin ★

vire

Thanks for that information. Does the book only contain the route, or is the text of the hike guide identical too?

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vire
vire
• Edited:

Overall rating : 4.3 / 5

Date of your route : Jun 04, 2010
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

I did this hike on my own in the spring, with snowdrifts in the small valleys; you can cross them easily with an ice axe by cutting a few steps.
It’s a beautiful but very challenging hike.
BUT I am surprised that Visorando has published this route, which appears in Pascal Sombardier’s book *Du Mont Aiguille à l’Obiou* on page 44, when it is stated that published routes must not be taken from books!!!???
As a great fan of the ‘Vertige’ hikes published by Sombardier, one should follow his publications with GLENAT.

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