Chamouse Mountain

A beautiful walk in the Baronnies (Drôme Provençale), starting from the hamlet of Somecure (source of the Ouvèze) in the commune of Montauban-sur-l’Ouvèze, taking you to the summit of La Chamouse, at over 1,500 metres, amidst alpine pastures, allowing you to walk the entire ridge and complete a full circuit.

Views across the whole of the south-east, from La Meige, Oisans and Vercors to Dévoluy, via Mont Ventoux and the Montagne de Lure.

Details

n°827926
Creation:
Last update:
Last review:
  • Walking
    Activity: Walking
  • ↔
    Distance: 17.63 mi
  • ◔
    Duration according to the author: 6 hrs 
  • ▲
    Difficulty: Very difficult

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 5,079 ft
  • ↘
    Descent: - 5,066 ft

  • ▲
    Highest point: 4,993 ft
  • ▼
    Lowest point: 2,556 ft

Photos

Description of the walk

Access: From Saint-Auban-sur-l’Ouvèze, take the D65 towards Montauban-sur-l’Ouvèze. Drive through the small village and head towards the Col de Perty. Then continue on the D65A to the right, towards the hamlet of Somecure (a fairly narrow road).
Enter the hamlet on the right, then park on the lawn behind the small chapel (there is no other non-private parking elsewhere).

(S/E) From the Somecure chapel, take the Chemin du Grand Étable (street sign on the corner of the house) and head up the tarmac road.

(1) Continue slightly to the right along this same road, following the signs for L’Eydoux (signpost), then carry on to the end of the tarmac road.
After the last houses, the tarmac road turns into a track suitable for vehicles.

(2) At the fork in the road, take the grassy track on the left which goes uphill (a track that’s just about passable by car), then walk for about 150m.

(3) Turn right. Please note that the path is not marked at all at the start. You are on the edge of a very sparse, sloping woodland. As you proceed, the track becomes more visible.
A few old cairns (many of which have collapsed) and small stone walls show the way forward. You must, however, remain vigilant.
The vegetation consists mainly of broom on stony ground. The track allows you to climb quickly, heading due east (landmark: the mobile phone mast is situated opposite you, slightly to the left). Continue along this track for about 1,500 metres, climbing.

(4) At the edge of a clearing (scattered broom, short grass, at an altitude of 1,180 m), follow the edge of the forest to the left, which soon leads onto a track suitable for vehicles. Continue along this track for about 900 m.

(5) At the junction with a wide track suitable for vehicles, turn right and continue uphill along the same track. After 150m, ignore the turn-off to the right.

(6) At the junction after 500m, carry on straight ahead along the track. There are yellow markings.

(7) At the next junction, carry on straight ahead. The track climbs and becomes rockier, but remains accessible to 4x4 vehicles. Yellow markings.

(8) At the junction on the plateau, carry on straight ahead, following the yellow markings. You’ll cross a meadow after 250m. The markings are spaced out across several rocks. The track faces south.

(9) After walking for about 600m, at the junction, take the path that climbs to the left (the path is just before a section with box trees). The entrance is marked by several successive cairns. Yellow markings.
The path leads to the ridges of the Montagne de Chamouse. More or less regular cairns and yellow markings make it easy to find your way. The path runs along the edge of the cliff.
The landscape quickly changes to high-altitude pasture. Continue along the ridges until you reach the summit, marked simply by a sealed granite boulder.

(10) After the summit, continue along the north-west-facing ridges (downhill section), following the yellow markings, until you reach La Tussie.

(11) At the ‘La Tussie’ sign, turn right towards ‘Sous la Tussie’. Yellow markings. The path descends rapidly through boxwood before crossing a beautiful beech forest.

(12) At the “Sous la Tussie” sign, turn left towards “La Borel”. Yellow markings. The path runs through the forest. The track descends steeply at first as a single track, then widens until it becomes passable by vehicle at the end.
Ignore the few side tracks you come across and stay on the track following the yellow markings.

(13) At “Borne 182”, at the junction with a wide track suitable for vehicles, turn right and continue to the next junction, ignoring any side tracks. Yellow markings.

(14) At “Marker 123”, at the junction of two tracks suitable for vehicles, turn right. Ignore the turn-off to the left after 200m and the one to the right after 500m. Stay on the track suitable for vehicles following the yellow markings. The terrain climbs.

(15) After 1.6 km, turn left onto the path running alongside a fenced pasture (watch out for sheepdogs). The junction is also at the change in gradient (there is a slight levelling-off at this point). The path goes round the edge of the pasture.

(16) At the first junction, turn right to continue downhill. You’ll go round a pasture (with cows). After 300 metres, the path passes over a marl deposit.
Follow this path downhill until you reach the farm (visible below).
After 600m, the track widens and becomes suitable for vehicles.

(17) As you leave the farm, at the junction with the tarmac road, turn right. Yellow-red markings (GRP®). Continue along the road to the village of Izon-la-Bruisse. The road goes round the Montagne de Garre.

(18) On reaching the village of Izon-la-Bruisse, at the reservoir, turn right onto the small tarmac road, heading towards the town hall.
At the ‘Izon-la-Bruisse’ sign, follow the signs for ‘Col d’Izon’ (yellow markings). You’ll find yourself on a track suitable for vehicles that climbs steadily. Stay on this main track until you reach the Col d’Izon.

(19) At the “Col d’Olun” sign, turn right towards “Col d’Izon”. Ignore the two turn-offs to the right after 250 metres. Continue along this wide track. There is a picnic table at the pass.
Yellow markings; this track is shared with the MTB route (specific markings: a Yellow Triangle and two dots).

(20) After about 700m, at the Fork in the road, keep right. The track remains suitable for vehicles.
Carry on following the yellow markings. Ignore the only turn-off to the right you come across.

(21) At the ‘Col d’Izon’ sign, turn left towards ‘Pas de Bouvrègues, Ruissas’. Yellow markings. You’ll find yourself on the ridges, with your back to the Montagne de Chamouse.

(22) At the “Clos de Pitoye” sign, carry on straight ahead towards “Col de la Trappe”. Yellow markings. Continue the descent along the ridges.

(23) After about 700m, carry on straight ahead along the ridges, leaving the wide track to your left. The path narrows to a single track.

(24) At the Col de la Trappe, turn right onto the track suitable for vehicles leading downhill. Yellow markings. After 700m, pass the Bergerie de la Trappe and ignore any small side tracks you may come across, staying on the wide track.

(25) At the Fork in the road of trackways, take the track on the right which leads uphill. Leave the track on the left and the yellow markings behind.
Continue along this wide track, ignoring all side tracks. The track climbs steadily all the way.

(26) When you reach a junction on a slight plateau (altitude 1,066 m), carry on straight ahead, ignoring the turn-offs to the left and right. Continue straight ahead, then after 100 m ignore the path on the right, and after 300 m ignore the path on the left (poorly marked).
You will then walk alongside fields of lavender.

(27) Carry on along the edge of the fields and take the path slightly to the left at the edge of the forest. This is an old logging track.
The slope is very steep at the start. The path passes through a gravel pit after a 250m rapid descent.

(28) Continue the descent to the left until you come to a grassy track suitable for vehicles. Head for the Fork in the road at the exit of L’Eydoux.

(2) Turn left to return to the hamlet of Somecure and reach the car park behind the chapel (S/E).

Waypoints

  1. S/E : mi 0 - alt. 2,556 ft - Somecure Chapel
  2. 1 : mi 0.04 - alt. 2,579 ft - Turn right towards L’Eydoux
  3. 2 : mi 0.31 - alt. 2,638 ft - Fork in the road to the left, near the - Ouvèze (rivière)
  4. 3 : mi 0.4 - alt. 2,703 ft - Right, barely visible path
  5. 4 : mi 1.22 - alt. 3,848 ft - Turn left at the clearing
  6. 5 : mi 1.7 - alt. 3,822 ft - Right at the junction
  7. 6 : mi 2.25 - alt. 4,062 ft - At the junction, follow the track suitable for vehicles
  8. 7 : mi 2.59 - alt. 4,232 ft - At the junction, go straight on
  9. 8 : mi 2.97 - alt. 4,406 ft - Continue straight ahead
  10. 9 : mi 3.33 - alt. 4,413 ft - Turn left, follow the cairn
  11. 10 : mi 4.36 - alt. 4,948 ft - Summit of the Chamouse mountain
  12. 11 : mi 4.9 - alt. 4,688 ft - La Tussie
  13. 12 : mi 5.2 - alt. 4,455 ft - Below La Tussie
  14. 13 : mi 6.28 - alt. 3,675 ft - Marker 182
  15. 14 : mi 6.68 - alt. 3,419 ft - Marker 123
  16. 15 : mi 7.71 - alt. 3,934 ft - Path on the left
  17. 16 : mi 7.8 - alt. 3,996 ft - Continue to the right
  18. 17 : mi 8.72 - alt. 3,652 ft - Leave the farm on the right
  19. 18 : mi 9.89 - alt. 3,422 ft - Bassin
  20. 19 : mi 11.31 - alt. 4,062 ft - Col d’Olun
  21. 20 : mi 11.7 - alt. 4,177 ft - Junction on the right
  22. 21 : mi 12.41 - alt. 4,400 ft - Col d’Izon
  23. 22 : mi 13.61 - alt. 4,144 ft - Clos de Pitoye
  24. 23 : mi 14.16 - alt. 3,904 ft - Straight on along the ridges
  25. 24 : mi 14.6 - alt. 3,615 ft - Col de la Trappe
  26. 25 : mi 15.38 - alt. 2,927 ft - Fork in the road, right
  27. 26 : mi 16.22 - alt. 3,507 ft - Flat section, straight ahead
  28. 27 : mi 16.5 - alt. 3,553 ft - Edge of the forest, on the left; head downhill
  29. 28 : mi 17.05 - alt. 2,812 ft - To the left, on the descent
  30. S/E : mi 17.63 - alt. 2,556 ft - Somecure Chapel

Notes

There are no water sources along the entire route.

The route crosses numerous pastures where Patou sheepdogs are present; dogs are strictly prohibited.

It is possible to shorten the walk from point (25) by turning left whilst continuing to descend along the track, following the Chantaour ravine.

Highest point at 1,532 metres, not 1,515 metres.

Reviews and comments

4 / 5
Based on 2 reviews

Reliability of the description
4.5 / 5
Ease of following the route
3 / 5
Route interest
4.5 / 5
Ivan01
Ivan01
• Edited:

Overall rating : 3.7 / 5

Date of your route : Apr 26, 2024
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★☆☆☆ Disappointing
Route interest : ★★★★★ Very good
Very busy route : No

Navigation was very difficult at the start (I never managed to find the first ‘hard-to-spot’ path and ended up scrambling up the off-track slope through the rocks until I came across the track; it was the same trying to find the start of the path at point 9 – a real struggle – I eventually found it a little further on, hidden in the vegetation…). It seems a GPS is essential for these first few kilometres. After that, the ridge of the Montagne de Chamousse is simply magnificent, with views of Mont Ventoux on one side and the snow-capped Alps on the other; I felt completely alone in the world in the meadow, with one or two birds of prey to admire… So I headed back down via the Col d’Izon, skipping the whole section between points 11 and 21, put off by the huge waste of time at the start where I’d struggled so much to find my way… A bit disappointed, then, even though the whole final section is magnificent and posed no further problems. Definitely worth doing again, so as not to be left with that feeling of unfinished business.

Machine-translated

MLB84
MLB84

Overall rating : 4.3 / 5

Date of your route : Jun 23, 2021
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

A lovely walk to explore the Baronnies plateau and the Chamouse mountains, with magnificent views.
A very beautiful beech forest on the way down from Chamouse.
Rated ‘difficult’ (rather than ‘very difficult’) given the length and elevation gain; otherwise, nothing particularly technical.
Two minor pitfalls:
- The ‘sente’ trail at the start, which isn’t easy to find or follow through the broom, boxwood and pine needles on the ground, etc., except for the final third.
- The tarmac section of the climb from 1113 to Izon-la-Bruisse; that said, I didn’t come across a single car.

Machine-translated

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