Rocher des Deux Trous, Mont Gaussier and Lac du Peirou via the ladders

Pleasant walk in the Alpilles with magnificent panoramic views in places

Details

1114892
Creation:
Last update:
Last review:
  • Walking
    Activity: Walking
  • ↔
    Distance: 8.31 km
  • ◔
    Average duration: 3h 30 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 401 m
  • ↘
    Descent: - 399 m

  • ▲
    Highest point: 348 m
  • ▼
    Lowest point: 98 m

Photos

Description of the walk

(S/E) Start from the old priory car park. Drive along the priory grounds, take the left-hand bend and continue straight ahead (Voie Communale des Carrières) until you reach the T-junction (red gate in front of you).

(1) At the T-junction, turn right and continue straight on past Mas de la Grosse Galine and Mas Séraillet. At this point, the path is blocked by a cable. Continue straight ahead along the dented path and then a more manageable path along the Gaudre de Valrugue to the tarmac road.

(2) Take the tarmac road to the right for about 150m, then turn right at the hairpin bend, signposted "Rocher des Deux Trous" (yellow sign at this point). Continue straight on until you reach the Rocher des Deux Trous.

(3) On leaving the Rocher des Deux Trous, retrace your steps for 50m, ignoring the left-hand path you came by and taking the right-hand one. At the end of this fairly steep climb, you will be rewarded with a magnificent panoramic view over the road.

(4) Go a few metres to the right on the road, leaving the Sentier de Découverte (Discovery Trail) which dips to the right, and continue as far as the bend in the road.
Take the right-hand path back down and continue straight ahead through the heath towards Mont Gaussier.

(5) Take the metal ladder and continue climbing. Follow the blue and yellow markings to reach the D5.

(6) Carefully cross the D5 and take the path that runs alongside it on the right (blocked by a cable). Continue straight on to Lac des Peirou, leaving the paths on your left.

(7) Walk along the right-hand side of the lake to the end, then take the path cut into the rock that rises to the right. You will then come to a passageway with a succession of staircases cut into the rock, secured by chains, and metal bars set into the rock.

(8) After passing through a hole in the rock, take the path down to join the D5. Walk along the side of the road until you reach the first pedestrian crossing. Cross the road, then the park in front of you to reach the road and the car park on the left(S/E).

Waypoints

  1. S/E : km 0 - alt. 100 m - Old priory car park
  2. 1 : km 1.19 - alt. 107 m - T-intersection on the right
  3. 2 : km 3.64 - alt. 289 m - Tarmac road on the right
  4. 3 : km 4.42 - alt. 303 m - Rocher des Deux Trous (Saint-Rémy-de-Provence)
  5. 4 : km 4.96 - alt. 280 m - Tarmac track
  6. 5 : km 5.63 - alt. 270 m - Scale - Mont Gaussier / Sentier des échelles
  7. 6 : km 6.22 - alt. 137 m - Crossing the D5
  8. 7 : km 6.97 - alt. 131 m - Lac de Peïrou (Saint-Rémy-de-Provence)
  9. 8 : km 7.29 - alt. 190 m - Passage through the rock
  10. S/E : km 8.31 - alt. 100 m - Old priory car park

Notes

Warning: some sections are equipped with ladders, rungs and cables. There aren't really any great heights, but people who are very prone to vertigo may find it difficult.

This route passes through multiple protected areas, which may be subject to special regulations:

Worth a visit

(3) Rocher des Deux Trous
Ascent of Mont Gaussier "Échelle métallique
Lake Peirou

Reviews and comments

4.5 / 5
Based on 132 reviews

Reliability of the description
4.2 / 5
Ease of following the route
4.3 / 5
Route interest
4.9 / 5
Titus30
Titus30

Overall rating : 3.7 / 5

Date of your route : Apr 19, 2026
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : Yes

This is a moderate hike for someone who is young and hikes regularly, but for those aged 70 and over, the climbs are tough, especially the steep section after the lake.
So I would have classified it as difficult.

Machine-translated

BéFiT84
BéFiT84

Overall rating : 5 / 5

Date of your route : Apr 13, 2026
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Hello,
A lovely walk, suitable for all ages and fitness levels.
Not suitable for dogs (large or small).
Well worth doing again and again.

Machine-translated

User 8725402

Overall rating : 4 / 5

Date of your route : Mar 16, 2026
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : Yes

It was busy, no doubt because it was the weekend

Machine-translated

Denis Navarro 13
Denis Navarro 13

Overall rating : 5 / 5

Date of your route : Feb 27, 2026
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

A magnificent hike of less than 10 km. Easy to moderate for most of the route, it has two fairly technical sections: the climb up Mont Gaussier via steep ladders, and the path along the edge of the ravine and the "tunnel" at Lac du Peirou via ladders. These two sections are extraordinary but caution is advised for those who suffer from vertigo. You must remain very vigilant at these technical points.
There were quite a few people at the rock with two holes on this beautiful Sunday in February. In my opinion, it is best to avoid it in the height of summer.
I recommend it for experienced hikers.

Machine-translated

User 7472073

Overall rating : 3.7 / 5

Date of your route : Dec 08, 2025
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : No

This hike is incredible but a little dangerous on the descent at this time of year.
The diversity of the landscapes is incredible.
Hiking boots are essential as some sections are difficult to navigate
It is rated as moderate, but not at this time of year.
A beautiful discovery, but very challenging.

Machine-translated

blancj
blancj

Overall rating : 5 / 5

Date of your route : Nov 24, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

This hike is truly beautiful. The car park at the starting point was full, but there is a pay car park nearby (€4 per day): the Antiques car park, which you reach on your return from the hike.

Machine-translated

olli13090
olli13090

Overall rating : 4.3 / 5

Date of your route : Nov 11, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

A lovely, varied walk with beautiful views of the Crau and the Avignon countryside.

Machine-translated

User 27757473

Overall rating : 5 / 5

Date of your route : Oct 27, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Very beautiful hike 🥾

Machine-translated

donm
donm

Overall rating : 4.3 / 5

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

A magnificent hike on 16 October 2025, in glorious weather.
Overall, the route is easy to follow. We took the opportunity to climb to the summit of Mont Gaussier. Access is easy thanks to the steps carved into the rock. However, a little caution is necessary on the summit plateau due to a deep, unsecured chasm. It's worth going there for the splendid view from the top!

Machine-translated

BBO
BBO

Overall rating : 5 / 5

Date of your route : Sep 29, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Beautiful walk, splendid views.

Machine-translated

User 10326247

Overall rating : 4 / 5

Date of your route : Aug 10, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : No

A beautiful hike to do in spring or September, but not in August due to the heat... Some sections of the trail are dangerous for children and people who suffer from vertigo.

Machine-translated

le islois
le islois

Overall rating : 4.7 / 5

Date of your route : Jun 05, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

Very beautiful hike, but some sections are very physically demanding, especially the climb up Mont Gaussier and the climb down to Lac du Peirou via the ladders. You will need a GPS device to follow the route, but it is a hike with magnificent views.

Machine-translated

dame2médous
dame2médous

Overall rating : 4.7 / 5

Date of your route : May 27, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Probably not in great shape that day, we hesitated a lot before finding the proposed start. We thought we'd missed it, but managed to find the start of the trail.
This is an unusual hike that requires sure-footedness and concentration, but it's well worth the effort.
Not recommended for people with vertigo.

Machine-translated

Ana.mgga
Ana.mgga

Overall rating : 4.3 / 5

Date of your route : Apr 05, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : Yes

Great hike! But I wouldn't recommend it to people who suffer from acrophobia (vertigo) - I was quite surprised.
There are quite a few passages where you have to climb...
But it's worth it, after more than 5km there's a superb view waiting for you!
An average or even slightly intense hike, in terms of difficulty.

Machine-translated

chesnut2
chesnut2

Overall rating : 5 / 5

Date of your route : Mar 31, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Very nice walk! I did it in the direction indicated, which was fortunate because I had to do 2 "dog carries" (stairs and cave) that would have been downright perilous in the opposite direction (although my dog is very agile).
It was done during the week, so not many people on this particular route, but it must be very busy otherwise. The remarkable points (2 boulders, lake...) are accessible via other, easier routes, so there are more people on site, but they are no less magnificent.
There was no problem parking, the route was followed via GPS but the descriptions were accurate.

Machine-translated

Other walks in the area

For more walks, use our search engine .

The GPS track and description are the property of this route's author. Please do not copy them without permission.