La Crête de la Bouisse via the Rocher de Jardanne

From Vieux Serres under the Rocher de la Pignolette, via the Crêtes de Fontarache, the Rocher de Jardane and the Crêtes de la Bouisse: a beautiful hike through sharp limestone pavement and boxwood.

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 13.92 km
  • ◔
    Average duration: 6h 25 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 842 m
  • ↘
    Descent: - 845 m

  • ▲
    Highest point: 1,488 m
  • ▼
    Lowest point: 664 m

Photos

Description of the walk

Park in the square opposite the Serres tourist office.

(S/E) Cross the D994 to climb the stairs in old Serres under the rocks overlooking the village. Take Rue du Portail on the left, then Rue de l'Auche on the right. The path leads to the Bonsecours Chapel clinging to the Rocher de la Pignolette.
The orientation table near the chapel seems rather optimistic about the elevation gain (730 m instead of 780).

(1) The trail continues in a series of switchbacks along Chemin de la Chapelle towards Tombeau du Juif.

(2) Then head to Rocher Pointu.

(3) Next, the well-marked trail runs along the Crête de Fontarache between rocks, boxwoods and oaks. On one side is Provence with the Buëch Valley and Lake Germanette, and on the other side are the Dauphiné Mountains with the Petit and Grand Buëch Valleys.
Very soon, we arrive at the Col de Saumane (1030m). This is a nice spot for a short break.

(4) Do not take theGR®®94(we will take it on the way back) but follow the signpost towards Rocher de Jardanne.

(5) Pass by the Source de l'Ollagnier and continue on the left towards Rocher de Jardanne (1352m).

(6) At Rocher de Jardanne, continue along the ridge westwards to Serre de la Bouisse (1500m) with a superb panorama from Ventoux to Grand Ferrant via Pic de Bure, Aujour and Ceüze through the sharp limestone pavement and boxwood.
This is a nice spot for a snack.

(7) Retrace your steps to the Col de Saumane.

(4) From there, take theGR®®94on the right downhill, which takes you back to Serres via the Saumane chapel.

(8) Pass the school with its unique sundial in the Hautes Alpes (on the school façade).
(9) The return journey is easy, taking you through the streets of the village. Admire the magnificent door of the town hall (S/E) as you pass.

Waypoints

  1. S/E : km 0 - alt. 667 m - Located opposite the tourist office. Close to the - Buëch (rivière)
  2. 1 : km 0.37 - alt. 733 m - The chapel and the orientation table
  3. 2 : km 0.92 - alt. 823 m - The Tomb of the Jew
  4. 3 : km 2.34 - alt. 1,045 m - Le Rocher Pointu
  5. 4 : km 2.69 - alt. 1,030 m - Col de Saumane (1029 m)
  6. 5 : km 3.47 - alt. 1,126 m - Source captured
  7. 6 : km 4.36 - alt. 1,355 m - The Jardanne Rock
  8. 7 : km 6.72 - alt. 1,488 m - Le Serre de la Bouisse
  9. 8 : km 12.11 - alt. 859 m - Chapelle de Saumane
  10. 9 : km 13.46 - alt. 696 m - Meridian
  11. S/E : km 13.92 - alt. 664 m - Square opposite the tourist office

Worth a visit

The inscription in Hebrew on the Jew's tomb: Rabbi Joseph, son of Rabbi Nataniel, of blessed memory.

The magnificent door of the 12th-century town hall is the work of Daniel Guillebot, a cabinetmaker from Serres.

This is the birthplace of Alexandre Corréard (1788-1857), engineer, journalist and geographer. He boarded the frigate La Méduse on 17 June 1816. The ship ran aground on 2 July. He was one of the fifteen survivors. In Géricault's famous painting "The Raft of the Medusa", he is the man reaching out towards the horizon.

Always be cautious and plan ahead when you're outdoors. Visorando and the author of this route cannot be held responsible for any accidents occurring on this route.

The GR® and PR® markings are the intellectual property of the Fédération Française de Randonnée Pédestre.

Reviews and comments

4.7 / 5
Based on 13 reviews

Reliability of the description
4.8 / 5
Ease of following the route
4.6 / 5
Route interest
4.7 / 5
MAGE05000
MAGE05000

Overall rating : 4.3 / 5

Date of your route : Apr 25, 2026
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

It’s actually an interesting route right from the start. But be careful: the start of the route isn’t opposite the tourist information centre, but almost opposite the post office! And the staircase mentioned has been demolished; the path is currently under construction, but we managed to get through anyway (it was a Saturday). However, if you park near the main roundabout in the centre (close to the tourist office) and cross the road, you’ll soon spot signs at the start of Rue des Remparts pointing towards Rocher de Jardane and Col de Saumane. This changes the starting point slightly.
Otherwise, the route is generally quite clear, but it gets hot quickly once you leave the shade, which is quite abundant and very welcome on the frankly steep section between points 5 and 6. It’s also worth noting that the “fountain” at Ollagnier is actually a water collection point: you can clearly hear the water running, but it IS INACCESSIBLE.
Otherwise, the views are magnificent, but you might want to avoid the route the day after rain, and if there’s a risk of rain during the day, the ground can quickly become slippery due to the leaves on the ground.
And as already mentioned, the section between points 6 and 7 is only of interest for about a third of the distance; beyond that, visibility is lost due to the vegetation. This first third offers some open spaces ideal for a break or a meal.

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User 27604848

Overall rating : 4.7 / 5

Date of your route : Sep 15, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

It is a very beautiful route, and I can confirm that the views are superb.
To find the starting point, it's easiest to use the chapel at the top of Serres as a reference point: as we all know, all roads lead to...
The elevation gain is significant, so be sure to bring plenty of water! In some places, the markings are faded or hidden by vegetation, but thankfully hikers have placed cairns to help you stay on the right path.

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a.chazal
a.chazal

Overall rating : 5 / 5

Date of your route : May 18, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A beautiful ridge trail with 180-degree views. The trail on the ridge can be a little difficult to follow at times due to the vegetation: boxwood, flowering service trees and lots of alpine flowers. Beautiful spring sunshine made this hike very enjoyable. The start of the hike through the old village of Serres adds to the charm of this route. At the end of the hike, the two cafés on the square are open on Sundays!

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Buisson8
Buisson8

Overall rating : 4.3 / 5

Date of your route : Oct 16, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

I did this route in foggy weather, which prevented me from enjoying the surrounding peaks. This hike is quite long, especially since, once you reach the ridges, you can go even further. There are always beautiful views on the ridges, so we ended up walking for 9 hours.

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ffrantz
ffrantz

Overall rating : 4.7 / 5

Date of your route : Aug 15, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

A hike that is worth it for the view at the top, but the section between points 6 and 7 is very long and tedious: you can stop 1.4 km from point 6. The view is there.
The climb between 4 and 6 is quite steep but in the forest, so it's not too hot in summer.
The return trip to Serres is also long on the road.
We couldn't find a space in the car parks but we were able to park in the street just opposite the starting point.
A GPS is essential to find the starting point.

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francoise47
francoise47

Overall rating : 5 / 5

Date of your route : May 09, 2019
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

Beautiful landscapes, Provençal vegetation, a change from the traditional Rocher du Beaumont

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nergal
nergal

Overall rating : 5 / 5

Date of your route : Aug 07, 2018
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

A superb walk with magnificent views. Many thanks to the author.

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mapigap
mapigap

Overall rating : 5 / 5

Date of your route : Nov 27, 2017
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

There were eight of us on this hike that day. However, as the days are short and the sun isn't very generous, we completed the circular route in the opposite direction so that we could make the most of the sunshine.
9 - 8 - 4 - 5 - 6 - 7 - 6 - 5 - 4 - 3 - 2 - 1
A beautiful climb through the valley and past the Saumane chapel, returning to the sunshine via the Fontarache ridges.
Magnificent view from the Jardanne rock. The ridge is well sheltered despite the north wind.
Thank you for this great hiking idea.

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bbrandoleon
bbrandoleon

Overall rating : 4.3 / 5

Date of your route : Aug 15, 2017
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good

Hello, two small details about the route:
1) After Rue de l'Auche, pass in front of the primary school, then turn right at the crossroads onto Rue du Chateau, which leads to the Chapelle du BonSecours.
2) On the ridges, pay close attention to the route: cairns are far apart and there are multiple paths. As the ridge is wide, you may find yourself off the route and heading in a different direction.
otherwise, it's a very beautiful hike with a sublime panorama.

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Gozer L.
Gozer L.

Overall rating : 5 / 5

Date of your route : Apr 14, 2017
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

A leisurely hike lasting a total of 7½ hours, with a campsite set up shortly after point 7, where the relatively flat pastures allow for it. Between the panoramic views and the varied vegetation, it really is a great hike. I even came across a few wild boars in the forest between points 6 and 7 (early in the morning).

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Delise
Delise

Overall rating : 5 / 5

Date of your route : Mar 27, 2017
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

I agree with the previous reviews, it's a very beautiful hike. A must-do!

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PASCALOU27
PASCALOU27

Overall rating : 4.3 / 5

Date of your route : Aug 21, 2015
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good

A beautiful hike with stunning scenery as you cross the ridge and reach the summit.
Be aware, however, that this hike may prove difficult for some due to the significant elevation gain between the spring and the Jardanne rock (+215m in 900m). The descent can also be tricky in wet weather.
The walk through the old streets of the village is an added bonus to this hike

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josettegerard
josettegerard

Overall rating : 4.3 / 5

Date of your route : May 13, 2015
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good

very beautiful hike, fairly easy even if the slope is a bit steep at times. I recommend it, the path is well marked.
very beautiful view.

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