The Kerzerho Alignments

This hike allows you to discover many monuments from the distant Neolithic period (5000 to 2500 BC). Dolmens, menhirs and cromlechs can be found throughout this very pretty hike.

Details

61880
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  • Walking
    Activity: Walking
  • ↔
    Distance: 16.95 km
  • ◔
    Average duration: 4h 55 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 13 m
  • ↘
    Descent: - 13 m

  • ▲
    Highest point: 30 m
  • ▼
    Lowest point: 14 m
  • ⚐ Country: France
  • ⚐ City: Erdeven (56410)
  • ⚑
    Start/End: N 47.635134° / W 3.149513°
  • ❏
    IGN map(s): Ref. 0821OT
  • Hour-by-hour weather

Photos

Description of the walk

Leave your car in the car park along the road from Erdeven to Plouharnel. From the car park, you will find yourself in the Kerzhèro Alignments, a vast area where several lines of menhirs are arranged. The walk starts at the top of the menhir site.

(S/E) Take the path that runs along the top of the site. This path is marked with yellow signs. Take the path on the right. Head towards Mané Braz on the left.

(1) Take Mané Braz again on the right and continue straight ahead. Turn left onto Mané Braz.

(2) At the crossroads, turn left onto Mané Braz. After a right-hand bend, take the small path on the left through the woods and you will arrive at the Mané Braz dolmens.

(3) Cross and continue straight ahead. Join the lane and turn left. At the right-hand bend, turn left and then immediately right (grassy path).

(4) Cross the Alignements de la Chaise de César and continue opposite. Take the path again and turn right. Before the picnic area, take the small path on the right towards the pond (Er Varquez) then left towards the Mané Croch dolmen.

(5) When you reach the picnic area, take the road on the right. Cross Crucuno (there is a very pretty dolmen in the square), then turn left at the dolmen. Follow the path and you will see the Cromlech de Crucuno on your right.

(6) Continue along the path. At the crossroads, take the path on the right. At the intersection, turn right, then take theGR® on the left.

(7) Cross Kergazec and take the path after the last house opposite (see the Saint-Antoine Chapel and the fountain by the path on the right). Return to the chapel and turn right to rejoin the road you crossed (follow theGR®).

(8) When theGR® turns right at a 90° angle, continue straight ahead. At the intersection, turn left (Étang du Varquez).

(9) At the fork, turn right. At the end of the road, turn left until you reach the Menhir du Vieux Moulin.

(10) Return to the crossroads near the pond.

(9) Back at the crossroads, turn right. Drive back and forth to the ruins of the Manè er Mor dolmen.

(11) When you reach the road, take the path on the left.

(12) In the village of Kernevé, turn right and cross the road. At the crossroads, continue straight ahead.

(13) Back in Crucuno, take the road on the left, go up towards the top of the village and take the cul-de-sac on the left, then the street on the left. Then turn left towards Le Triono.

(14) Follow the road and turn right towards Kerbernès. At the road, take Erdeven. Cross Kerbernès.

(2) At the crossroads, turn left to reach the Kerzhèro Alignments (S/E).

Waypoints

  1. S/E : km 0 - alt. 17 m - Kerzerho alignments - Alignements de kerzerho
  2. 1 : km 1.09 - alt. 17 m - Mané Braz on the right
  3. 2 : km 2.17 - alt. 17 m - Mané Braz on the left
  4. 3 : km 2.71 - alt. 26 m - Dolmens of Mané Braz
  5. 4 : km 4 - alt. 20 m - Alignments of Caesar's Chair
  6. 5 : km 4.64 - alt. 19 m - Picnic area
  7. 6 : km 5.89 - alt. 20 m - Cromlech of Crucuno - Cromlech de Crucuno
  8. 7 : km 7.09 - alt. 16 m - Cross Kergazec
  9. 8 : km 8.14 - alt. 17 m - Go straight ahead off the GR
  10. 9 : km 8.81 - alt. 19 m - Varquez Pond
  11. 10 : km 9.37 - alt. 25 m - Menhir of the Old Mill
  12. 11 : km 11.61 - alt. 18 m - Path on the left
  13. 12 : km 12.65 - alt. 19 m - Village of Kernevé
  14. 13 : km 13.75 - alt. 25 m - Crucuno, road on the left
  15. 14 : km 14.7 - alt. 18 m - Le Triono
  16. S/E : km 16.95 - alt. 17 m - Kerzhèro alignments

Notes

The route can be divided into three parts if desired:
- A short loop to discover the alignments and the Giants of Kerzerho and the dolmens of Mané Braz.
- A second loop to Crucuno to see a beautiful dolmen and a cromlech, as well as the alignments of César's chair.
- The complete loop takes you to the Saint Antoine Chapel and the Vieux Moulin menhir.

Passing through numerous villages (fountains).

In wet or rainy weather, some parts of the route can be very muddy.
According to another hiker, after a very wet period, the route after Crucuno can be very difficult or even impossible to pass due to the water level on the path.

Worth a visit

There are several detours along this beautiful trail to see menhirs and dolmens in their natural setting.

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

4.5 / 5
Based on 44 reviews

Reliability of the description
4.4 / 5
Ease of following the route
4.5 / 5
Route interest
4.7 / 5
mikelitos
mikelitos

It’s true that we’ve had a particularly wet season this year, which is why reconnaissance is so useful.

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kinoublin
kinoublin

Overall rating : 3.3 / 5

Date of your route : Apr 13, 2026
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★☆ Good
Very busy route : No

A very pleasant walk up to point 6; after point 6, we were told to turn right, but there was no path – it was just thick undergrowth. We tried anyway but were forced to turn back as there was nothing but brambles and no sign of a path. So we carried on straight ahead, walking along a low wall as the path was completely flooded. We reached point 7 via a different route, but a large section of the path to point 9 was flooded. Best done when it hasn’t rained for a few days. We were forced to walk along a field, but I think this hike is magnificent in good weather. Two days later we did it again and went from point 5 to point 13. Much shorter but dry.

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riko 56
riko 56
• Edited:

Overall rating : 3 / 5

Date of your route : Apr 06, 2026
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★☆☆ Average
Very busy route : No

Hello everyone,

A tough hike this Easter weekend. At this time of year, the Crucuno circular route is impassable unless you’re wearing wellies; the sunken paths have turned into frog-filled pools stretching for hundreds of metres, with sections of water up to 40 cm deep. This Crucuno circular route is of no interest at all – perhaps in summer! On the other hand, the first part is pleasant, with lovely paths through the woodland and the chance to explore the megalithic monuments. To finish, we took the road back from Plouharnel to Erdeven to avoid the flooded paths.

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bernard coulomb
bernard coulomb

Overall rating : 5 / 5

Date of your route : Sep 24, 2025
Reliability of the description : Not used / Not applicable
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

One of the most historically significant megalithic routes in the region. Enthusiasts will appreciate these stone formations still buried in the heart of the Breton forest, even though the forest is gradually being fragmented.

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User 26618903

Overall rating : 5 / 5

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

We encountered a few people, couples, families, and individuals. This was not a problem as the site is large and the paths are quite wide

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JMT56
JMT56

Overall rating : 4.3 / 5

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

An interesting route with a variety of landscapes: villages, forests, ponds, chapels, fountains, megaliths, etc.
A bit muddy in May.
The signposting needs to be redone in places.
The return trip to "Le vieux moulin" can be avoided, not very interesting.
The rest is very pleasant and interesting.
I would recommend

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daniellerando
daniellerando

Overall rating : 4.7 / 5

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

beautiful sunshine for a walk between paths and tracks, menhirs, dolmens, cromlechs, MAGNIFICENT
but after the quadrilateral between ( 6 and 7 ) impassable path near the pond of Varquez Rongal, mud at the beginning but then flooded path, on the left of the path thanks to a stony embankment allows us to advance (phew) with the intersection the rise towards ( 7 ) starts rather well in spite of mud, but then the path is also flooded, and no passage in the close fields, thus return with regrets,
We'll be happy to go back after the summer when it will be drier.
In spite of everything, it's a very nice walk, an easy route to follow.
Danielle

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jlo68
jlo68

Overall rating : 4.7 / 5

Date of your route : Oct 14, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

Stones and woods
Lovely hike, done in October, so not too crowded, just as already indicated, a lot of paths that cross, but with the Visorando app, no worries about following the route.
Thanks a lot.

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mikelitos
mikelitos

Thank you Marie O for your comment, it's true that this site is better for me than the Carnac alignments. We're in the middle of nature here, which really changes our perception.
Bonne rando
Michel

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Marie O
Marie O

Overall rating : 5 / 5

Date of your route : Aug 22, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

One word: MAGNIFICENT, and then several: EPOUSTOUFLANT, SURPRISING... the hike is simply magnificent, winding through forest paths, sometimes in the shade, sometimes in the sun. I started the 17 kms at 8am and got some wonderful views of the sites where there were no other people. I was tired but happy with my discovery. In my opinion, you need to have a GPS (like Google Maps) or, better still, the Visorando app, as many of the paths can lead you astray. Thank you for this hike.
Marie O

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mikelitos
mikelitos

Hello, that's why they're called "alignments".
I also think it's clear in the description of the hike...
Best regards

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severemarc
severemarc

Overall rating : 3.7 / 5

Date of your route : Jun 21, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★☆☆ Average
Very busy route : No

Lots of "old rocks

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beurdouche
beurdouche

Overall rating : 5 / 5

Date of your route : Jun 05, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

A beautiful walk, best done at the start of the rising tide to take advantage of both aspects (low tide and high tide) and, of course, in fine weather...

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Pascal C56
Pascal C56

Overall rating : 4.7 / 5

Date of your route : May 28, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

This is a beautiful walk that will take you to ten or so megalithic sites, each one different from the next! It should be done in good weather to avoid the tricky, muddy sections - we considered it in February and fortunately postponed it. On 28 May, after 3 weeks of fine weather, the route was perfectly rideable! What's more, there were very few roads and lots of shady paths, which was really appreciated.
We highly recommend this application to avoid getting lost despite the detailed description, there are so many paths everywhere!
Really, I recommend it.

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Neuvil
Neuvil

Overall rating : 4.3 / 5

Date of your route : Jun 13, 2021
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

It's a beautiful trail, and one of the most interesting, perhaps even more so than Carnac; we did the first loop in very hot weather, so there was no problem with mud.
We had a little trouble finding the path (it's everywhere!) despite a full description (IGN map essential).
As far as the start is concerned, I think it's more in the middle of the site than at the top and we couldn't find the route on the map on the right after the cromlech, so we made a diversion to point 18.
The Crucuno dolmen is astonishing; you'd think it had been put there on purpose.

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