Col de Risoul and Rancié Mines circular.

A beautiful route alternating between beech forests, stunning views of the Os Valley and old iron mines, starting from the small village of Sem, above Vicdessos. Best done in dry, clear weather.

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 5.66 mi
  • ◔
    Average duration: 4h 05 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 1,680 ft
  • ↘
    Descent: - 1,667 ft

  • ▲
    Highest point: 4,393 ft
  • ▼
    Lowest point: 3,176 ft
  • ⚐ Country: France
  • ⚐
    Area: Pyrenees
  • ⚐ City: Sem (09220)
  • ⚑
    Start/End: N 42.766963° / E 1.518793°
  • ❏
    IGN map(s): Ref. 2047ET, 2148OT, 2148OTR
  • Hour-by-hour weather

Photos

Description of the walk

Park in the car park at the entrance to the village of Sem.

(S/E) Follow the D208A road up to the junction with the Village path, which starts on the right.

(1) Continue along the road to reach the Col de Sem and its cross.

(2) Turn right and continue for a few dozen metres to reach the glacial dolmen at Palet de Sanson.

(3) Return to the pass via the same route.

(2) Head back down the road towards Sem and return to the junction with the Village path.

(1) Turn left onto it, follow the path down for 250 m and, after the first houses, turn right up the steps to return to the car park where you started.

(S/E) The circular route begins now. From the car park, which is on the right-hand side of the road as you come down from the pass, look for the stone shelter and take thePR®® short-distance hiking path, marked in yellow, which climbs to the left heading due south (accessible to small 4x4s). The path is wide and stony and climbs quite steeply through the woodland: the stream is on your left. Ignore the first path coming from the right and continue to a second junction.

(4) Take the path climbing to the right; this path, still the yellow-markedPR®®, is wide and well-marked. Follow it to reach a crossroads with several directions.

(5) Keep straight on thePR®® to reach the paragliding launch site at Col de Risoul.

(6) Go back a short way and turn right down the forest track. You will soon reach the Nagot Forest Shelter.

(7) Leave the forest road here and turn left onto a narrow path that is not always clearly marked and is sometimes overgrown with broom. Shortly after a small, fairly well-defined valley (thalweg), with a spring below, the path takes a sharp left-hand bend to reach the spring. Leave it on your left. Continue along the path, which is still rarely used and overgrown with broom. You will then reach thePR®® junction you passed on the way out.

(5) Turn right onto thePR®® again and follow it to the junction you also passed on the way out.

(4) Turn right towards the Ruisseau de Sem and cross it. Continue along the well-marked path, which then climbs slightly. Cross another stream, then pass a cross overhanging the path on the right before reaching the fenced-off Galerie de l’Auriette and the Anciennes Mines de Rancié, whose large cave-like entrance is on the right.

(8) Start a new descent on the left via a series of hairpin bends, passing in front of the Font du Minier. Return to the village of Sem. Cross the Ruisseau de Sem once more before returning to the village car park (S/E).

Waypoints

  1. S/E : mi 0 - alt. 3,219 ft - Car park in the village of Sem
  2. 1 : mi 0.17 - alt. 3,238 ft - Village trail junction
  3. 2 : mi 0.38 - alt. 3,258 ft - Col de Sem
  4. 3 : mi 0.47 - alt. 3,330 ft - Glacial dolmen known as the Palet de Sanson
  5. 4 : mi 1.68 - alt. 3,924 ft - PR junction
  6. 5 : mi 1.91 - alt. 4,101 ft - Circular junction
  7. 6 : mi 2.55 - alt. 4,377 ft - Col de Risoul (1320m)
  8. 7 : mi 2.84 - alt. 4,350 ft - Nagot Forest Shelter
  9. 8 : mi 4.32 - alt. 4,249 ft - Auriette Tunnel and the Old Mines of Rancié
  10. S/E : mi 5.66 - alt. 3,219 ft - Car park in the village of Sem

Notes

From Tarascon-sur-Ariège, head towards the Os Valley. Just as you enter Vicdessos, turn left and climb up to the village of Sem. Park in the car park at the entrance to the village.

The circular route is largely unmarked except for thePR®® sections (marked in yellow). You need a good sense of direction as there are numerous half-abandoned paths branching off.

Worth a visit

(3) Glacial dolmen, Rancié Old Mines, village of Sem.

(5) Col de Risoul: paragliding launch site and lovely viewpoint looking north over the Os valley and its villages.

(8) Former Rancié Mines

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

4.4 / 5
Based on 12 reviews

Reliability of the description
4.8 / 5
Ease of following the route
3.9 / 5
Route interest
4.7 / 5
philjomar
philjomar

Overall rating : 4.3 / 5

Date of your route : Jul 03, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : No

Hello,
Once you arrive at Pic de Risoul, to return to the mine, do not take the forest track as indicated because it does not lead to the right place (we had to turn back because we were getting seriously off track, thank you IGN map), but take part of the path that leads to the peak.
It's a very beautiful hike and the end at the mine is interesting. The information on the explanatory signs is very well done.
Best regards, fellow hikers.

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Hibou florensac
Hibou florensac

Overall rating : 4.3 / 5

Date of your route : Jul 15, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

Very informative route on the conditions of iron ore extraction in the 19th century.
Well-maintained trail.

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LOS ESCAPATS
LOS ESCAPATS

Overall rating : 4.3 / 5

Date of your route : Mar 31, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : Yes

A very beautiful route, following a snowfall and through the stunning Pyrenean mountains. The explanations about the old iron mines illustrate the difficult life of miners in those days.

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tej
tej

Overall rating : 4.7 / 5

Date of your route : Aug 28, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

Very beautiful hike with stunning views. The history of the Rancié mines (various information panels along the trail) is very interesting and impressive. I highly recommend it.

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CMA31
CMA31

Overall rating : 5 / 5

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

Very beautiful and interesting hike. Easy route and path.

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TO57207
TO57207

Overall rating : 4.7 / 5

Date of your route : Jun 28, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

Hello, we took the forest road to return from the Col de Risoul to the Col de Grail (joining the GR10 along the way) following the comments on the descent given in the guidebook. It was longer but safer. In hindsight, I think that joining the GR10 straight away avoids a long stretch on the forest road and must be better, especially as the forest road is in full sun at midday...
The view from the Risoul Pass and the descent from the mine are memorable. Thank you.
We met three people mowing the grass on the downhill path: a good initiative by the municipality of SEM, I imagine.

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Julian
Julian

Overall rating : 4 / 5

Date of your route : Oct 07, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

A beautiful hike with some elevation gain (for us young city dwellers).

Be careful on the section between the refuge and the GR trail: the path is cluttered with tree trunks in places, and plants that make the path difficult to see. You really need to use GPS, and honestly, I would be careful in wet weather (which was not the case for us).

Otherwise, really beautiful views of the Pyrenees mountains!

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Bouconne VTT
Bouconne VTT
• Edited:

Overall rating : 4.7 / 5

Date of your route : Sep 24, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A very beautiful hike. The elevation changes are quite varied, and the return route from the Col de Risoul is currently a bit cluttered with a few tree trunks.
I put the return trip to Le Palet last because part of it is on a paved road.
All the data is accurate.
You could indeed make a small variation via the GR10.

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Patrone G.
Patrone G.

Overall rating : 4 / 5

Date of your route : Aug 03, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

An easy, varied and interesting hike overall, which we did not follow to the letter; we decided to take a longer, and in our opinion, easier route: from Sem, we climbed to the Pic de Risoul, from there we followed the GR10 via the Col de l'Esquerus, then the Col de Grail; we left the GR10 before Lercoul to join the Visorando route, which descends to Sem via the old Rancié mines. We finished with a round trip to the Palet de Samson.
NB: if you do not wish to display my comments in this section but in the comments section, that's fine with me.

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roujol
roujol

Overall rating : 4.3 / 5

Date of your route : Jul 01, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

Watch out for ticks along this route (we caught several).

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GAUSSENS Marie-Claire
GAUSSENS Marie-Claire

Overall rating : 4.3 / 5

Date of your route : Feb 15, 2021
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

beautiful hike with magnificent views of snow-capped peaks; long climb at the beginning of the hike

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Michel HORTE
Michel HORTE

Overall rating : 4.7 / 5

Date of your route : Oct 19, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

Lovely walk for late autumn

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yvesmerciey@free.fr
yvesmerciey@free.fr

Hello Étienne, thank you for your reply.
I now have a better understanding of how moderation works.
However, on a route where the landmarks on the map do not always correspond to the terrain (poorly marked paths or farm tracks that do not appear on the map), which can only be seen on the ground, it may be useful to add details. Given the changes made (change of waypoints, different wording, etc.), I think it would have been better if we could have discussed it. Well, it's always strange to spend time describing a route in detail and then see the description changed without notice.
No hard feelings.
Yves

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Netra
Netra ★

Hello Yves, and thank you for your comments.

As part of the moderation process, each hike is reviewed and modified by three different moderators. When we consider that the modifications are not very significant, we do not ask for validation by the author. It may then happen that the author does not recognise the changes. In this case, two situations must be distinguished.

If the changes have introduced an error or errors, the author is free to make corrections. The modified hike will be reviewed again by a moderator who will contact the author for discussion if necessary.

The second situation is the removal of numerical data that we do not consider essential. This is typically the case with azimuths, as this information is only useful to a minority of hikers who are equipped and accustomed to using this type of data. Unless you are really off-trail, we recommend indicating directions by reference to the cardinal points and favouring directions that are accessible to all, such as "1st on the right" or "the path that starts at the foot of the post".

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yvesmerciey@free.fr
yvesmerciey@free.fr

Message for the moderator who approved the description of my hike.
Hello and thank you for approving the hike. However, I find it unfortunate that you have substantially modified the description of the route that I had made, based on my experience in the field. Some of the information I had included and which has been deleted (e.g. elevations, directions/azimuths, the fact that a path can be used by a 4x4) seems useful to me, even for a hiker who is not an expert in navigation. If you recommend using IGN maps, why delete the information they provide?
In conclusion, I do not agree with the changes made by the moderator.
Yves MERCIER

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