Lac Nègre - Pas du Préfouns

One of the main sites in the Mercantour, Lac Nègre offers the reward of a sudden view of a rocky high mountain landscape that contrasts with the peaceful forest climb that precedes it. The Pas du Préfouns is the viewpoint of the Préfouns valley with the Aiguilles de Questa on the Italian side and the Lac Nègre cirque on the French side.

Details

79207
Creation:
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  • Walking
    Activity: Walking
  • ↔
    Distance: 16.94 km
  • ◔
    Average duration: 7h 35 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 956 m
  • ↘
    Descent: - 951 m

  • ▲
    Highest point: 2,603 m
  • ▼
    Lowest point: 1,668 m

Photos

Description of the walk

From Saint Martin de Vésubie, head towards Le Boréon and after the lake take the D89 towards La Vacherie de Salèse, Col de Salèse, until you reach the Salèse car park.

(S/E) The trailhead (towards Col de Salèse, Lac Nègre) is at the end of the car park, at the hairpin bend in the road that continues (closed to all unauthorised vehicles). The climb is between the torrent and the road at the bottom of the valley, following theGR®52, which is sporadically marked.
The trail crosses the road once at a hairpin bend and then rejoins it almost at the Col de Salèse.

(1) Once past the pass, continue along the track until you reach a left-hand bend.

(2) Take the path on the right (towards Lac Nègre, Pas du Préfouns) which continues along the mountainside (yellow markings). Cross the footbridge over the stream and then, about 50 metres further on, you will come to a fork.

(3) Follow the path on the right, which starts above a small wall with dry stone steps, and you will reach a flat area (Camp Soubran).

(4) Turn left and continue for a few more metres before reaching Lac Nègre.

(5) Follow the path that goes around the lake on the right, then climb gradually to end up on a steeper section, which is not very difficult thanks to the large switchbacks it makes until you reach the Pas du
Préfouns.

(6) Return by the same route (S/E).

Waypoints

  1. S/E : km 0 - alt. 1,669 m - Salèse car park
  2. 1 : km 2.85 - alt. 2,025 m - Col de Salèse
  3. 2 : km 3.11 - alt. 2,013 m - Turn left, then take the path on the right
  4. 3 : km 3.95 - alt. 2,053 m - On the right, on a small wall
  5. 4 : km 5.31 - alt. 2,274 m - Camp Soubran, on the left
  6. 5 : km 6 - alt. 2,355 m - Lac Nègre
  7. 6 : km 8.48 - alt. 2,603 m - Pas du Préfouns
  8. S/E : km 16.94 - alt. 1,668 m - Salèse car park

Notes

From Lac Nègre to Pas du Préfouns, allow 2 hours for the round trip.
The hike is considered moderate as the trail is not very steep and is not steep.

This route passes through a protected area, which may be subject to special regulations:

Worth a visit

Covering an area of 12 hectares, the dark waters of the lake are surrounded by impressive ochre-coloured granite walls. Above the lake, the Pas du Préfouns (2,615 m) marks the border with Italy.

 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

4.8 / 5
Based on 25 reviews

Reliability of the description
4.8 / 5
Ease of following the route
4.7 / 5
Route interest
4.9 / 5
User 4416443

Overall rating : 5 / 5

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

We planned to camp there, but the snow decided to make an appearance, haha. A very beautiful route that leads to an incredible lake

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Legall Yves
Legall Yves

Overall rating : 5 / 5

Date of your route : Sep 03, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A beautiful hike to avoid in winter unless you have suitable equipment. In other seasons, it is a beautiful hike with views of the lake at the end of the climb. On the way back, you can descend to Lake Graveirette, a direct descent facing south to be taken with caution, or return to the intersection at the start of the climb towards Lake Nègre and head right, then west, which is worth the detour.

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xaf06
xaf06

Overall rating : 5 / 5

Date of your route : Sep 03, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Wonderful hike.

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frsbrb
frsbrb

Overall rating : 5 / 5

Date of your route : Sep 17, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Magnificent hike.
We didn't climb up to the Pas du Préfouns, but from Lac Nègre we reached Lac de Graveirette, a small lake surrounded by greenery (completely different from Lac Nègre)

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Legall Yves
Legall Yves

Overall rating : 4.7 / 5

Date of your route : Aug 15, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

A beautiful hike, best avoided on hot days as the climb up to the Fréfoun Pass is long and steep.
At the pass, there are beautiful views of Lac Nègre and the surrounding area.

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MCN22
MCN22

Overall rating : 5 / 5

Date of your route : Jul 04, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Very pleasant route. Following Storm Alex, the path along the road to the Col de Salèse is marked as "closed" but is passable without any problems. We took the road to climb up (much longer) and came back down this way. This route can be combined with the Gavriette lakes, which can be reached from Lac Nègre off the beaten track

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ethnolog
ethnolog

Overall rating : 4 / 5

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

the path along the stream to the Salèse Pass has partially disappeared. You can take the GR52 even though it is considered impassable and therefore closed. We took the road for part of the way and then the GR52, which is very passable but a little uneven. After the pass, the path is in perfect condition. A magnificent hike, and the Lac Nègre is full.

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mabaladeetrando
mabaladeetrando

Overall rating : 4 / 5

Date of your route : Jun 30, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : Yes

Hike completed on 20 June 2023. At the start, the trail was still closed, so I took the paved road and rejoined the trail after the cowshed. It was quite rocky in places but always passable. The description is detailed up to the pass, after which you quickly reach Plan Soubran (the small lakes are not mentioned).

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Djé0629
Djé0629

Overall rating : 5 / 5

Date of your route : Sep 09, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A superb hike with very few people on a Friday in September. It is moderately difficult until you reach Lac Negre, then more difficult until Pas du Prefouns, but it remains accessible and is definitely worth the effort! Allow between 45 minutes and an hour from the lake to Pas du Prefouns. The view is superb.
On the way back, we took a short detour to Lac Graveirette, which is also very beautiful.
Approximately 7 hours including breaks

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guygelas06
guygelas06

Overall rating : 5 / 5

Date of your route : Sep 10, 2021
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 that alternates between alpine pastures and more mineral landscapes beyond Lac Nègre towards Pas de Préfouns.
The low number of visitors due to the poor weather on the day was a great opportunity to encounter mountain wildlife, including chamois, ibex and marmots.
This hike is highly recommended for all walkers who are capable of a 7-hour hike with an elevation gain of over 1,000 metres.

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capi83
capi83

Overall rating : 4.7 / 5

Date of your route : Aug 24, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

This hike is very popular in summer, but there is plenty of room for everyone
A beautiful hike where you can regularly find water to fill your water bottles. No major difficulties to report. The elevation gain is reasonable. Beautiful scenery in the upper part. Be careful, it's not easy to camp around Lac Negre as it's mostly rock and stone all around, so it's better to head back down to Lac de La Graveirette to spend the night. Unless you're blind, it's hard to get lost...
I recommend this route for those who hike occasionally.

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syloo
syloo

Overall rating : 5 / 5

Date of your route : Aug 02, 2020
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.
We did a variation by combining two hikes. We went up via Lac Graveirette, then Lac Nègre and downhill. These two lakes are truly magnificent. The path is not difficult.

Please note: those who recommend parking at the Col de Salèse to shorten the hike should be aware that this is not possible. Access to the pass is prohibited to vehicles (unless you have special permission). Therefore, do not plan to park up there, but rather at the last car park indicated in the hike description.

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Jérémie_34
Jérémie_34

Overall rating : 5 / 5

Date of your route : Jun 22, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Very pleasant hike.
Option to start from the Salèze pass to shorten the hike by about 8 km.

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Fazer13
Fazer13

Overall rating : 5 / 5

Date of your route : Oct 12, 2019
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good


A very beautiful hike with superb scenery at this time of year. The paths are well marked and do not present any particular difficulties.
We climbed up to the Pas du Préfouns and it was really worth it, the scenery is magnificent!

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dlemeitour
dlemeitour

Overall rating : 5 / 5

Date of your route : Aug 28, 2019
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

Very pleasant hike.
From the start to point 1, it seems a bit long, especially on the way back. You can start from the Col de Salèse, but be aware that parking space is limited.
The lake is magnificent and the view on the Italian side is splendid.
A hike worth doing

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