Dormillouse loop via the Col Bas and Lac Noir

This lovely, easy walk will take you to a very alpine setting in just a few dozen minutes from the car park. The climb to Lac Noir is gentle and the scenery is very pleasant. You then reach Dormillouse at 2,505 metres, the highest point of the walk, after a steep but easy climb. There is a splendid view from the fort at the summit and the return journey is via the spectacular military path overlooking the Blanche valley.

Details

2107524
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  • Walking
    Activity: Walking
  • ↔
    Distance: 11.44 km
  • ◔
    Average duration: 5h 15 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 693 m
  • ↘
    Descent: - 693 m

  • ▲
    Highest point: 2,503 m
  • ▼
    Lowest point: 1,892 m

Photos

Description of the walk

By car, from Seyne, drive towards the Saint-Jean Montclar resort on the D207. At the end of the climb, when you reach the plateau, at the first large crossroads, turn right onto the D607 to the hamlet of Saint-Pons. When you reach the hamlet, take the first left towards Les Silves and after this hamlet, follow the Route Forestière du Col Bas on the right. Continue on the main track. Park at the end of the track in the Col Bas car park. There is a hiking sign with a map, signposts and picnic tables.

(S/E) From the back of the car park next to the sign and picnic tables, climb up to the track and turn right towards Col Bas. In the large hairpin bend, take the shortcut on the left. You will very quickly arrive at the foot of the path leading up to Col Bas on the right.

(1) Leave the path that runs horizontally and turn right onto the trail that climbs up; it is an easy and quick climb to the pass.

(2) When you reach the pass, continue straight ahead on the plateau, following the very visible path opposite the pass. You will come to a fork near some rocks.

(3) Take the path on the left towards Lac Noir (hiking signpost)
and head towards the lake.

(4) Go around it and continue along the path towards Dormillouse, leaving a path on your right.

(5) At altitude 2176, leave the tedious track and head through the vegetation and/or take one of the paths that join the small pass below the fort on the left.

(6) Continue climbing to the summit fort, where you will find a panoramic view. From the fort, descend and head right on the opposite slope.

(7) Take the extremely well-marked and easy military trail that leads back to the first crossroads.
At the fork, keep left on the military track.

(1) Turn right onto the same route you took on the way up to return to the car park (S/E).

The direction of the loop favours steep climbs and gentle descents to protect your joints, but you can of course do the circuit in the opposite direction.

Waypoints

  1. S/E : km 0 - alt. 1,892 m - Car park at the Col du Bas
  2. 1 : km 0.96 - alt. 1,983 m - Foot of the Col Bas trail
  3. 2 : km 1.43 - alt. 2,111 m - Col Bas (2112m)
  4. 3 : km 1.74 - alt. 2,108 m - Fork in the road (elevation 2176)
  5. 4 : km 3.5 - alt. 2,128 m - Lac Noir (vallée de l'Ubaye)
  6. 5 : km 3.98 - alt. 2,181 m - Fork
  7. 6 : km 5.48 - alt. 2,489 m - Summit - Dormillouse (sommet de)
  8. 7 : km 5.99 - alt. 2,438 m - Start of the military road
  9. S/E : km 11.44 - alt. 1,892 m - Car park at the Col du Bas

Notes

There are no water sources or shelters, but in summer there is a refreshment bar at the fort at the summit.
Standard alpine hiking equipment.
Be careful when driving up, as the last few kilometres of the track are unpaved and very low cars will not be able to make it.
(4) Lac Noir is a very pleasant spot for a picnic

Reviews and comments

4.8 / 5
Based on 26 reviews

Reliability of the description
4.9 / 5
Ease of following the route
4.7 / 5
Route interest
4.9 / 5
Lou cigalou
Lou cigalou

Hello. A correction has been made to the previous post to warn that after point 5, the Visorando trail is now blocked due to rockfalls, which make the path too rough and therefore dangerous. Continue along the track that joins the trail a little further up. This slightly increases the distance, but there are fewer obstacles.

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JFGHA
JFGHA

Did you take a different path?

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User 14521233

Overall rating : 3.3 / 5

Date of your route : Jul 21, 2025
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★☆☆☆ Disappointing
Route interest : ★★★★★ Very good
Very busy route : Yes

after the black lake, the route marked on Visorando is incorrect

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Lou cigalou
Lou cigalou

Overall rating : 4.3 / 5

Date of your route : Jun 16, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

This is a hike not to be missed if you are in the 04 department, a must-see! However, be careful, once you reach point 5, the shortcut is blocked (in both directions), so you have to follow the old track that was used by the owners of the refreshment bar at the summit and has been closed for about three years. It's a little gentler with hairpin bends and, above all, fewer boulders and very well marked in yellow. Extension: 500 m. That said, what a joy it was to arrive at Fort Dormillouse, where we had our picnic. We didn't know which way to look, it was extraordinary!!! To be done again and again 👍

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beajouan
beajouan

Overall rating : 5 / 5

Date of your route : Sep 13, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A very beautiful hike, with lots of variety between the lakes, green, hilly surroundings and the fort, which can be reached via a good, fairly stony track. We didn't take the shortcut, but followed the track that climbs steadily. The view from the top is truly magnificent. It's a real viewpoint over Les Séolanes and the whole Barcelonnette valley, as well as Lake Serre Ponçon, Les Ecrins, Le Gapençais and the Bure mountain. Magnificent. The only downside was the icy wind.
A walk to recommend!

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lioba
lioba

Overall rating : 5 / 5

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

For access, follow the advice on Visorando carefully. Google Maps suggested other routes on tracks that were passable for 9 km! The recommended access route is fine.

The climb is pleasant. We couldn't find shortcut 5, probably because we were surrounded by a hundred sheep and their dogs! The climb up the fort trail is a bit tedious and rocky but doable.
The arrival offers an incredible 360-degree view of the entire valley. There was no one at the fort and no refreshment stand (fortunately, because it was completely peaceful!). We were able to admire paragliders and gliders.
The return trip was very difficult: nearly 4 km on a narrow trail, in full sun, dizzying, rocky and monotonous. The view of the valley is superb, but I would have preferred a more varied route.
In the end, we covered a distance of 12.8 km, walking for 4 hours and 15 minutes + a picnic break.
We did the hike with an 8-year-old (a good walker). The walk to the lake is perfect for children who are used to walking a bit. For those who are not used to walking, the climb is more physically demanding.

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lioba
lioba

Overall rating : 5 / 5

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

For access, follow the advice on Visorando carefully. Google Maps suggested other routes on tracks that were passable for 9 km! The recommended access route is fine.

The climb is pleasant. We couldn't find shortcut 5, probably because we were surrounded by a hundred sheep and their dogs! The climb up the fort trail is a bit tedious and rocky but doable.
The arrival offers an incredible 360-degree view of the entire valley. There was no one at the fort and no refreshment stand (fortunately, because it was completely peaceful!). We were able to admire paragliders and gliders.
The return trip was very difficult: nearly 4 km on a narrow trail, in full sun, dizzying, rocky and monotonous. The view of the valley is superb, but I would have preferred a more varied route.
In the end, we covered a distance of 12.8 km, walking for 3 hours and 15 minutes + a picnic break.
Hike done with an 8-year-old child (good walker). Up to the lake, it's perfect with children who walk a little. For light sleepers, the climb is more physically demanding.

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Juliejank
Juliejank

Overall rating : 5 / 5

Date of your route : Jun 10, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Hike done in June. We found snow at the summit. Mountain atmosphere with lakes, peat bogs and forests. Perfect in the sense indicated. The climb to the fort is quite steep. Magnificent view from the fort, with gliders and paragliders. The descent via the military road is gentle (but therefore long). Really beautiful walk.

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phil.meca
phil.meca

Overall rating : 4.3 / 5

Date of your route : Oct 12, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : Yes

More kilometres than indicated..
The Visiorando route up to Dormillouse requires attention and you need to stay focused on your GPS because the marked path is well signposted..
Suggestion: on the plateau, also follow the marked trail, which allows you to see another lake without adding distance or elevation gain..
To descend from the fort to the car park at the lower pass, you can take the path that passes below (Brèche chairlift) and leads directly to the car park..
Great walk
To be repeated

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fou2nature
fou2nature

Overall rating : 4.7 / 5

Date of your route : Oct 30, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

You're setting off on a magnificent hike. The autumn colours and generous sunshine are a treat for the eyes. Don't forget your camera. The GPS route is a valuable aid after your picnic at Lac Noir. We took a shortcut via the chairlift, which took us up to a track that put us back on the trail. Phew! The view from the summit is fantastic and the return trip is safe despite the vertiginous cliffs caressed by the clouds, which are nothing short of spectacular. In short, it's a precious memory filled with exhilarating sensations. Pure happiness! 😜✨👍

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marrirando
marrirando

Overall rating : 5 / 5

Date of your route : Aug 17, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Very pleasant hike, but we stopped at the black lake for a picnic and then returned via the same route. (The descent was perilous due to loose stones underfoot.)
The scenery was breathtaking and we regretted not being able to continue to the summit with young children, but we were satisfied to have made it to the lake.

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Ninaam
Ninaam

Overall rating : 4.7 / 5

Date of your route : Jul 12, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

Access to the car park, despite the last kilometre of stony road with ruts in a few places, is no problem for a sports convertible.
The GPS guidance was perfect!
The only downside is that the fort's refreshment bar no longer exists. On the plus side, there is no generator noise or unpleasant smells.
The return trip along the balcony road is wide enough to reassure those who are afraid of heights.

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cessi
cessi

Overall rating : 4.7 / 5

Date of your route : Jul 16, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

Very beautiful hike.
The last kilometre of the road to the car park is unpaved, so it's best to have a car with high ground clearance.
Hike should be done in the recommended direction.
Keep some water for the last stretch, which is long (1.5 hours), on a ledge and in the sun with no shade.

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Achca
Achca

Overall rating : 5 / 5

Date of your route : Jun 30, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Magnificent hike with a 360° view
We did it in the planned direction. It's true that the climbs are steep
Between points 5 and 6, we preferred the slightly more winding climb via the ski slope!
At the fort, a diesel engine (probably a poorly adjusted electric generator) stank. The only downside to this hike!
We saw vultures climbing to gain altitude.
The orientation table a little further down allowed us to name each of the surrounding peaks, all the way to Mont Ventoux! We stayed there for quite a while.
The return trip is on an old military track on a balcony. (Be careful if you are VERY prone to vertigo; otherwise, no problem.)
For those interested in geology, see the Alpes de Haute Provence geology guide, itinerary No. 7, where you can discover Upper Cretaceous limestone, observe alternating layers of sandstone and pelites, and see the striations left by an ancient glacier...
Thank you for this wonderful day

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vida
vida

Overall rating : 5 / 5

Date of your route : Jun 10, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

beautiful hike, magnificent view of the surrounding mountains and Lake Serre Ponçon. Four paragliders took off in front of us towards Fort Dormillouse

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