Baou de Quatre Ouro (576 m) and Croupatier via the caves path

This active route will take you through the Croupatier to the Baou de Quatre Ouro, one of the four "Toulonais brothers". Paths and ledges where you have to use your hands, passages with ropes, discover the main caves of the massif, where the famous caves of the Château du Diable make the route more interesting.

Technical sheet

105411
Creation:
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  • Walking
    Activity: Walking
  • ↔
    Distance: 14.22 km
  • ◔
    Average duration: 6h 50 
  • ▲
    Difficulty: Difficult

  • ⚐
    Return to departure point: Yes
  • ↗
    Vertical gain: + 975 m
  • ↘
    Vertical drop: - 966 m

  • ▲
    Highest point: 576 m
  • ▼
    Lowest point: 136 m

Photos

Description of the walk

Park in Ollioules in Chemin de l'Oratoire, just before the last tarmacked section signposted "dead end". There are a few parking spaces near the Régage booster station.

Go uphill at the end of Chemin de l'Oratoire. At the last house, follow the GR®51 on the right (red and white waymarkers) which climbs through the pine trees and plunges into the hill. After a good, long climb and a short descent, at ref. point 240 (1) you go around the trench for the buried gas pipeline. The path then starts to climb again. You will reach the Barre de Taillan pass (ref. point 232) (or Telegraph Pass) (2).

Grotte du Patrimoine (Heritage Cave)
After around twenty metres, on the right you will see three big pine trees - the cave opening is at the foot of the pine tree on the far left. On leaving, take the GR®51 again. After the two zigzags in the path, continue a few dozen metres on to ref. point 324.

Château du Diable Caves
You will see an enormous cairn on the left there, indicating the detour towards the Château du Diable. To reach the caves, take the path on the left, which winds down a scree with a gradually increasing slope. The path ends in a small ledge, then a rock which is quite well-equipped for climbing: stone slopes, carved or built-in steps and even small sections with handrails. The path, which is not waymarked, but is easily visible in the clusters of rocks, overlooks the Destel valley 150 m below (a fairly steep slope).

On arriving at point (3), opposite the path and slightly downward, you will see the Arche d'Alliance, a magnificent stone archway above the void. Choose not to head towards the archway, instead continue along the cliff (we will cross it on the return). To the right of the archway, at the bottom of the huge rock face, you can see the entrances (porches) of the 5 cavities and, specifically, the 2 main ones close together, which are the only accessible ones. The further you advance, the more you will be able to see that the cave on the left opens up at the back. Go along the cliff on the left and behind the vegetation. The path will then reach the main porch on the left. Access to this cave presents no major difficulty as long as you don't hesitate to use your hands a bit to cross the last rocky ledge. For the next part, you're no longer on the hike, but visiting a series of caves, including the Grotte d'Amour (Cave of Love) on three levels.

The hike continues when you leave the caves through the second orifice. Go down the rocks, which aren't very steep, for about a dozen metres going under the porch with the help of a rope in a fixed position. A few metres later, you will reach the Arche d'Alliance (Alliance Archway). There's no need to be scared to cross over it, but just take care.

Immediately on the left, a rope takes you to the path which descends to meet up with the Destel gorges. Don't follow this route though, instead stay on the path and take the right straight after the archway. Climb for a few metres to reach another cavity, the "rose of the valley" cave (see the writing inside).

Take the same path again to leave it, then continue on the right to quickly re-join the access path used on the outward leg in order to re-join the GR®51 again at the big cairn. Then continue on the GR® to the left.

Ridge path
Follow the path to the north-east on the hillside. At point (4), a path heads straight on (south) towards Le Broussan, but stay on the GR®51 which turns to the right at 90° to follow the ridge of the Croupatier massif, which overlooks Toulon. After about 500 m, at point (5), leave the GR® and take the path to the right which comes to a pile of stones (called 'tapas' in Provençal and 'cairn' in English), which marks the border between the municipalities of Evenos and Ollioules (signpost). Then head in the direction of the high voltage pylon on the left and, as soon as possible, return to the GR®51 a bit further on. Follow it towards the east for about 300 m.

Croupatier Cave (and the pothole under the cave)
You need to locate an enormous cairn on the right-hand side of the path (6). At the cairn, leave the GR® and turn right (towards the south): another 'tapas' (cairn) is located on the edge of the cliff (no signposting). On the left, take the path which goes down through a gap in the rock face. A narrow path runs for a few dozen metres through dense shrubs and goes downhill quickly due south up to a terrace area a bit away from the foot of the cliff.
Next, continue in a north-west direction until you reach the foot of the cliff where an enormous porch opens into a huge cavity. In the middle, it is filled with a large raised stone foyer: this is the "Croupatier Cave". The "Aven sous grotte" (pothole under the cave) is located a few metres further to the south. Leave the Croupatier Cave via the east, this time going alongside the cliff, close enough to touch it.

Aven du Croupatier (Croupatier Cave)
Quite soon, a small gap then appears on the left. Do not be frightened to go through it using your hands, even if you don't have equipment. After a large rocky ledge, you will find a small ledge about two-thirds the height of the cliff - this is where the "Aven du Croupatier" nestles, with its small entrance, accessible with equipment (no larger than a human head).
Afterwards, you can easily finish the climb. You will reach a pine tree at the foot of a tapas (cairn).
Rejoin the GR®51 again. Continue on eastwards towards an old building and the ruins of its cistern.

Grotte Sud "du gaz"" (South Gas Cave)
Just before this building (7), take the path on the right which goes over a small bridge and follow it up to the cliff. A gap opens up, heading south-eastwards. A very small path takes you downhill going through very dense vegetation. At the bottom of the cliff, the path reaches a shelter under a medium-sized rock. You will see that the porch is partly hidden by a small tree which fell from the top of the cliff. This cavity does not have a registered name. Take the same path again and re-join the GR®51.

Croupatier-Baou de Quatre Ouro - Cap Gros
Go between the ruined building and its old cistern. Carry on along the GR®51 in an easterly direction, going by an old watchtower on the edge of the cliff (all that remains of it is its well-restored base), pass the "chemin du gaz" (gas path) which crosses the GR®51 until you reach the pass at 490 m.
The location is waymarked with a signpost saying "Ollioules 4.5 km". The GR® joins the D262 route here, coming from Toulon.
Turn left towards Baou. The path is wide and there is no risk of going wrong. Go past the Rouvière Plane crossroads (signpost). At ref. point 509 (8) (large military cistern), leave the D262 and take the path on the right. A bit further on, rejoin the D262 and continue south then east, towards the summit of Baou. You will quickly reach the summit which is without vegetation (360° panoramic view).

Pas de la Cavale (Cavale Steps)
(9) At the tip of the Cap, go around the old building for the antenna relay and the traces of the old mast, and take the path directly on the right, waymarked in green, which goes steeply downhill via the surprising "Pas de la Cavale" (Cavale Steps), a path cut out by men. Via a series of zigzags, the route first reaches a few short terraces on a west-east axis. After about fifty metres of going downwards, the path branches off towards the south following the axis of the scree. The path here is much less well-maintained, so although several traces of path show routes directly over the scree, stay on your right, quite close to the cliff where the path is waymarked and a bit better preserved.
The path then goes across several wooded and bare sections, still waymarked in green, but not regularly.
Turning towards the right, as soon as possible, the path then joins a circular route which goes along the bottom of the south face of the Baou, very popular with climbers. This path, which is not waymarked, more or less follows the contour level at about 430 m.
"Note: another path doubles alongside parallel to this path, a few metres lower down along a second rocky ledge. Be careful not to confuse them! Don't turn right too late.
Next, take the path on the left waymarked in green which goes downhill towards the Hautes-Pavègnes car park.
However, on the right you will go by several small gaps until you can very clearly see a quite large terrace a dozen or so metres higher up. Next, take a minuscule path on the right (10) until you reach this terrace covered in grass.

"No stress" shelter
There is a wide shelter under the rock at the back of this terrace, which is quite wide, but not very deep and not very big in size. Here you will find a climbing route called "no stress" (it's even painted on the rock).
Continue on the same path to re-join the main path which continues on towards the west, still going along the cliff. When it starts to go downhill towards the north-west, the path crosses a scree slope cluttered with lots of charred or fallen tree trunks (the remains of a fire in 2009).
A bit further on you will reach the last scree slope (funnel-shaped) which ends very close to a big stone arched bridge, on the D262 route coming from Toulon via the south and heading to Baou.
Go down this track for about 300 m towards Hautes-Pavègnes. In a straight line, at a smooth metal spike (11), take the small path on the right going downhill through the Vallon de Bonnes Herbes (Valley of Good Herbs).

Shelter No 2 in the Vallon des Bonnes Herbes
Go downhill for about fifty metres and then on the right you will find a small cave under a large white limestone slab more than a metre thick. The cave is situated only a few metres along the path - it is a marvellous natural shelter converted into a sheepfold.

Leave the shelter via the same path. Go down the bottom of the valley and then climb again up towards the path's stone bridge: continue on 300 m along a difficult path and go under the archway of the bridge. We then reach the end of the Vallon des Bonnes Herbes (12).

Shelter No 1 in the Vallon des Bonnes Herbes
Leave the path about 70 m after going under the bridge to quickly climb up the scree on the left. There isn't a path, but you need to head towards the cliff, at the foot of which you will see another natural shelter under the rocks. Return to the route via the same path and go over the bridge, then climb the path to the right.

Follow the path to the west and, at the first fork (13), take the path on the left which goes back down to Ollioules via the village of Détras. On the second section of the route, we cut off the zigzags on the track via very small paths which are in a very good state. It will take a bit more than 20 mins (2 km) to reach the ruined village of Détras (14).

Continue along the path on the right of the bridge, signposted in fluorescent orange, along the stream through the woods. Take the secondary paths through full pine woods (be careful as some of the paths on the map no longer exist, stay on the route shown for this walk). Then join the GR®51 at the crossroads of the Chemin du Gaz (Gas path) of the Barre de Taillan (1). Take the GR® on the left and then go back to the departure point.

Waypoints

  1. S/E : km 0 - alt. 136 m - Chemin de l'Oratoire
  2. 1 : km 0.74 - alt. 239 m - Chemin du gaz
  3. 2 : km 1 - alt. 232 m - Heritage cave - Col de la Barre de Taillan
  4. 3 : km 1.84 - alt. 325 m - Cairn towards Chateau du Diable - Turn left
  5. 4 : km 2.11 - alt. 251 m - - Descending the steep slope by via corda - Grottes du Château du Diable
  6. 5 : km 3.24 - alt. 372 m - Carrefour - Turn right
  7. 6 : km 3.69 - alt. 459 m - Clapas Evenos-Ollioules- Leave the GR to the right
  8. 7 : km 4.27 - alt. 476 m - Leave the GR51 to the right - Grotte du Croupatier
  9. 8 : km 4.68 - alt. 487 m - Leave the GR51 to the right - Tapas Evenos-Olli - Grotte du Gaz
  10. 9 : km 6.45 - alt. 509 m - Military tank - Leave the D262 to the right
  11. 10 : km 7.37 - alt. 574 m - Take the descent from Pas de la Cavale - Cap Gros/Baou de Quatre Ouro
  12. 11 : km 8.38 - alt. 440 m - Abri No Stress - Leaving the path to righteousness - Brèche de Madema
  13. 12 : km 8.94 - alt. 330 m - Leave the D262 track to the right - Abri N°2 du Vallon des Bonnes Herbes
  14. 13 : km 9.25 - alt. 354 m - Climb the scree to the foot of the cliff - Abri du Vallon des Bonnes Herbes
  15. 14 : km 10.25 - alt. 430 m - Turn left at the fork towards Détras
  16. 15 : km 12.48 - alt. 170 m - Continue straight ahead, leaving the bridge on your left - Village Le Détras (Ruines)
  17. S/E : km 14.22 - alt. 136 m - Chemin de l'Oratoire

Practical information

Near the caves, the route shown reflects the path only approximately.

This walk is referenced as "difficult" for two reasons: (1) the length of the route, the cumulative drop, the existence of steep sections and the section reserved for expert hikers; (2) in several sections you have to continue on without waymarkers on the very steep slopes, with often quite dense vegetation (including thorns, which are classic Mediterranean vegetation).

The time indicated includes several breaks for taking photos and detours via all the caves described, but also for going down several sections in "running" mode.

Take lots of water! Hiking shoes are obligatory. Robust clothing (jeans and long-sleeved top, just in case).

Nearly all the cavities detailed on the walk are accessible without equipment. However, in the absence of specialist equipment and an experienced guide, do not enter the "Aven sous grotte" (pothole under the cave) in the "Aven du Croupatier" (Croupatier pothole) and avoid the two higher cavities in the "Grotte d'Amour" (Cave of love). Many cavities (caves, shelters, balsams) can, however, act as refuges in the case of a storm so remember to think of them!

In the nearby area

Several "gas" paths scratch across the Croupatier massif. Not all their routes are shown on the map. On the ground, they are marked with yellow waymarkers.

The most remarkable cavities are described perfectly on the website of the Var Departmental Caving Committee (Comité Départemental de Spéléologie du Var (CDSV)): http://www.fichiertopo.fr/. I encourage you to look at the information sheets on each of the cavities before going on the hike - it is for this reason that they are not described here. The caves of the Château du Diable are well worrth the detour to them!

Close by:
The villages of Evenos, Ollioules, the heritage site of Courtine, the Oppidum, the Ollioules Gorges, the Gorges and Destel kettles (giant's cauldrons), Châteauvallon, etc.

 Always stay careful and alert while following a route. Visorando and the author of this walk cannot be held responsible in the event of an accident during 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 29 reviews

Reliability of the description
4.2 / 5
Clarity of route map
4.2 / 5
Route interest
4.7 / 5
narbo118
narbo118

Overall rating : 4.3 / 5

Date of walk : Jul 06, 2025
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★☆ Good
Route interest : ★★★★☆ Good
Busy trail : No

I did this hike on Friday, 4 July 2025. Yes, it was hot, and my 3 litres of water were definitely needed!
The hike is really nice and offers beautiful views of Toulon Bay.
I would like to point out the following:
- It is impossible to park at the indicated starting point. Everything is private and the road is paved. There are two or three public parking spaces, but they were occupied. I had to park at the bottom of the main road, which meant an additional climb of about 800 metres.
- Access to the caves is well signposted. No access problems.
- The descent from point 10 to point 11 is definitely worth the detour. However, although it is fairly easy to access at the beginning, the scree slope is very steep at the end!
- Before point 12, the scree is also very steep! High shoes are recommended to avoid injuring your ankles.
Tired from the descent, I shortened the route without going to see the two shelters in the Vallon des Bonnes Herbes.

Walking time: 5 hours including breaks (4 hours 35 minutes walking) from the main road.

Conclusion: A hike for experienced walkers who aren't afraid of steep slopes! WALKING STICKS ARE ESSENTIAL!

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Sfres
Sfres

Overall rating : 4 / 5

Date of walk : Mar 09, 2025
Reliability of the description : ★★★★☆ Good
Clarity of route map : ★★★★☆ Good
Route interest : ★★★★☆ Good
Busy trail : No

short

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Faron
Faron

Overall rating : 4 / 5

Date of walk : Jun 27, 2023
Reliability of the description : ★★★★☆ Good
Clarity of route map : ★★★★☆ Good
Route interest : ★★★★☆ Good
Busy trail : No

Access to the caves above the destel is not easy.

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MCTOUL
MCTOUL

Hello Mr or Mrs Veillat,
I'm very disappointed for you... The route is quite easy, even very easy up to the summit (sporty afterwards). I understand that you didn't even reach the summit?
Can you tell us a bit more about what you didn't find.
Did you have an IGN map? The visorando application on your smartphone?
The vast majority of visorandonneurs completed the entire route without a hitch.
Call me next time!
Sincerely

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veillat
veillat

Overall rating : 1.3 / 5

Date of walk : Apr 24, 2022
Reliability of the description : ★☆☆☆☆ Very disappointing
Clarity of route map : ★☆☆☆☆ Very disappointing
Route interest : ★★☆☆☆ Disappointing
Busy trail : No

We weren't able to go to point 4 (view of the gorges) or point 7 (loop after cap gros). We made a round trip on the Gr 51, which I would advise against.

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Lionel N.
Lionel N.

Overall rating : 5 / 5

Date of walk : May 09, 2021
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : Yes

A very sporty hike. A very beautiful route with fine views of Toulon and the surrounding area. However, the descent from Pas de la Cavale to point 10 should only be undertaken by experienced hikers. The descent is very "sporty" and sometimes dangerous. The same applies to the scree slope that joins the vallon des bonnes herbes at point 13.

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MCTOUL
MCTOUL

Well done, Stjo, for this appeal for witnesses! The search is on!
Bravo especially for these young "old hikers" who don't hesitate to brave the Pas de la Cavale and walk through the Croupatier heaths in all seasons!
Provence is so beautiful!
How lucky you are to live here!
In the secret hope of crossing paths with you... and recognising you!
That's a lot of exclamation marks, but you deserve them!
Happy hiking
Yours sincerely

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stjo
stjo
• Last modified:

Overall rating : 5 / 5

Date of walk : Mar 05, 2016
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

We climbed the Pas de la Cavale for the second time in March 2016, in very windy conditions, and my wife lost her dark green woollen cap, which was very dear to her. If you ever find it hanging on a bush on the right as you climb, spare a thought for her!
Even after 5 years, it might still be there after all!
stjo

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Dédé SAKADO
Dédé SAKADO

Overall rating : 4.5 / 5

Date of walk : Jan 24, 2021
Reliability of the description : ★★★★☆ Good
Clarity of route map : N/A
Route interest : ★★★★★ Very good
Busy trail : No

A very varied and enjoyable route, despite the fairly strong wind that day. We didn't spot the gas trail and returned to Châteauvallon
back to Châteauvallon following the blue signs.

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rakil
rakil

Overall rating : 4.7 / 5

Date of walk : May 11, 2020
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★☆ Good
Route interest : ★★★★★ Very good
Busy trail : No

Difficult, but allows you to take in all the sights of the Croupatier. We discovered two balms in the vallon des bonnes herbes, which we'd been passing for years without seeing! You don't have to do it all at once, so you can make the most of it, and you can also get round the big difficulties (not the cavale)... A very good guidebook that can be used to create variations adapted to everyone's tastes and abilities.

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stjo
stjo

Overall rating : 5 / 5

Date of walk : Nov 14, 2019
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good

This is a very fine, very sporty hike, which proves that you can go over and over the hills of Croupatier and Bau de Quatre Aures without ever getting bored.
We passed the Pas de la Cavale twice, but on the way up. It wouldn't have occurred to me to do it downhill, I find it a bit... tricky. You can always get out of a tight spot uphill, but it's much less certain downhill. But then, we're old walkers, and we want to become old walkers, so we're careful. The mountains (even on the Var coast) are like the sea, and with them it's best to be over-cautious.
So thank you for this very well-done guide.

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Roland1fois
Roland1fois

Overall rating : 5 / 5

Date of walk : Apr 13, 2019
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good

The size of the car park at the top of Chemin de l'Oratoire meant there wasn't room for everyone, so we opted to start from Châteauvallon. From there, we took the narrow road to the cistern, above which there is an orientation table, and then on to the oppidum at La Courtine. After the oppidum we caught up with the GR51. On the way back, from Le Détras we returned to the Châteauvallon car park.

A very pretty walk

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MCTOUL
MCTOUL
• Last modified:

Hello mremy,
The time indicated obviously depends on a number of criteria. It is purely indicative. Here 6h15 suggested by visorando, for 6h done by myself. So this time is realistic.
Tell me the reasons for your opinion:
Reliability of the description: Average
Reliability of the route on the map: Average
in order to improve the route for other visorando riders.
Thank you
Sincerely

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mremy
mremy

Overall rating : 3.7 / 5

Date of walk : Mar 17, 2019
Reliability of the description : ★★★☆☆ Average
Clarity of route map : ★★★☆☆ Average
Route interest : ★★★★★ Very good

the time indicated is less than the actual time..with the search and only on...

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devouassoud
devouassoud
• Last modified:

I really enjoyed this walk.

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