Boucle du Puits Fondu and discovery of the Trou à Morts

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The circuit starts by taking you along the Sausseron valley, then climbs up the hillside and continues through fields. You return to Nesles via paths through the woods.
The circuit also allows you to discover a unique site called the Trou à Morts.

Details

n°369789
Creation:
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  • Walking
    Activity: Walking
  • ↔
    Distance: 9.68 km
  • ◔
    Average duration: 3h 00 
  • ▲
    Difficulty: Moderate
  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 70 m
  • ↘
    Descent: - 70 m
  • ▲
    Highest point: 111 m
  • ▼
    Lowest point: 35 m
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Photos

Returning to Nesles
Nesles la Vallée. Town hall-school
The Green Cross
Nesles la Vallée. The old railway station

Description of the walk

This route is a loop starting from Nesles-la-Vallée. The starting point is the church car park.

(DA) Leave the car park and take the D64 on the right, then turn left onto Rue de la Falaise. Then turn left onto Allée Saint Denis (GR®1), cross the D79 road and continue straight ahead.

(1) At the end of the road in Verville, turn left onto Rue Carnot, cross the Sausseron and at the crossroads, turn right onto Rue Martel Vauquelin.

(2) At the crossroads, turn left onto Chemin de Parmain. Reach the plateau via the climbing path, follow the field on your left and continue to the end at the corner of the woods.

(3) Leave the woods on your right and turn left onto the path (Chemin de Pontoise), cross the D64 and continue straight ahead. At the first crossroads, keep slightly to the left.

(4) At the second crossroads, take theGR®1on the left until you reach a calvary (wrought iron cross), then continue straight ahead. Turn left when you reach Chemin de Méru and return to the Trou à Morts crossroads.

(5) Turn right and follow the path for about 450 metres until you reach the end of a cement fence. On your left, there is a small path through the woods that leads down to the hole. Be careful, the slope is very steep, especially as you approach the site.

(6) To return, follow the path in the opposite direction until you reach the junction with Chemin de Méru.

(5) Continue straight ahead on Chemin de la Croix des Friches and keep right on the long descent.

(7) When you leave the woods, turn left onto theGR®1and go straight ahead until you reach the Croix Verte.

(8) Turn right towards the Pony Club. At the end of Chemin des Bourbottes, turn right onto Rue de Parmain, then Rue de Verdun and continue straight ahead to reach the church car park (S/E).

Waypoints

  1. S/E : km 0 - alt. 41 m - Church car park, towards the - Sausseron (rivière)
  2. 1 : km 2.28 - alt. 38 m - Rue Carnot
  3. 2 : km 2.59 - alt. 40 m - Chemin de Parmain
  4. 3 : km 3.67 - alt. 105 m - On the left, Chemin de Pontoise
  5. 4 : km 5.2 - alt. 94 m - Return to the GR1, on the left
  6. 5 : km 6.29 - alt. 93 m - Carrefour Trou à Morts, on the right
  7. 6 : km 6.63 - alt. 87 m - The Trou à Morts
  8. 7 : km 7.76 - alt. 46 m - Exit the woods on the left
  9. 8 : km 8.44 - alt. 44 m - Croix Verte, on the right
  10. S/E : km 9.68 - alt. 41 m - Church car park

Notes

(S/E) The car park around the church in Nesles-la-Vallée offers plenty of space to park your car.

(2) Please note: Chemin de Parmain is very steep, as is the path leading to Trou à Mort (6).

Worth a visit

The Trou à Morts (6) is a hypogeum, in other words a cavity dug into the rock where the dead were laid to rest.

The Green Cross (8), Chemin des Boubottes, is a cross pattée

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.

Downloads
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Reviews and comments

4.5 / 5
Based on 39 reviews
Reliability of the description
4.6 / 5
Ease of following the route
4.6 / 5
Route interest
4.3 / 5
Eveetalex
Eveetalex

Overall rating : 4 / 5

Date of your route : Jul 15, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

hello,
I did this tour with a group of eight people on 13 July.
there is no need to go to the place called "Le Trou à Mort". There is nothing to see there. This part of the tour should be removed as it adds nothing to the tour.

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FloS
FloS

Overall rating : 4.7 / 5

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

A very pleasant and accessible hike. I did it with my 10-year-old son, who loved it. Following the red trail on the map and the explanations, there were no particular difficulties. The scenery is lovely, passing through the charming village of Nesles la Vallée, the forest and the fields. We were lucky enough to see two flocks of wild geese and an eagle.
I would recommend this for a lovely family outing

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Alain95
Alain95

Overall rating : 4 / 5

Date of your route : Nov 13, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

Difficulty finding the hole on the course.

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Chartier Duraincy
Chartier Duraincy

Overall rating : 3.3 / 5

Date of your route : Feb 20, 2023
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★☆ Good
Very busy route : No

difficulty finding the hole and then continuing on the course.

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sylvie.picandet
sylvie.picandet

Overall rating : 4.3 / 5

Date of your route : Aug 22, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

Difficulties finding the hole on the course

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Baynaud denys
Baynaud denys

Overall rating : 4 / 5

Date of your route : Apr 17, 2021
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

we couldn't find the hole. Poorly marked.

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Baynaud denys
Baynaud denys

Overall rating : 4 / 5

Date of your route : Apr 17, 2021
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

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Moussard
Moussard

Overall rating : 4 / 5

Date of your route : Mar 02, 2021
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

We're not sure we've found the hole that isn't clearly marked.
We found something, at least.

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nicolechauvin
nicolechauvin

Overall rating : 5 / 5

Date of your route : Sep 09, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

We enjoyed this varied hike: fields, forests... Nothing to report.

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PascalBrio
PascalBrio

Overall rating : 4.3 / 5

Date of your route : Sep 07, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★☆☆ Average
Very busy route : No

Part of the route is located in a suburban area, which detracts from its appeal. Apart from that, the walk is beautiful, as is often the case in the Vexin region.

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cajoba
cajoba

Overall rating : 4.3 / 5

Date of your route : May 25, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

A pleasant hike through varied landscapes: villages, forests, fields...

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sosso60
sosso60

Overall rating : 4.3 / 5

Date of your route : Feb 23, 2020
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good

A beautiful loop around Nesles La Vallée to discover an ancient burial site.

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Marc1953
Marc1953

Overall rating : 4.3 / 5

Date of your route : Jan 16, 2020
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

Sorry, but the descriptions are unclear.
The directions "aux chemins de Méru" (to the roads of Méru), "le chemin des friches" (the road of the wastelands), "La croix verte" (the green cross)...
are places that only residents of the towns surrounding the starting point
... Only the GPX point guided our hike.
Thank you for allowing me to share my hikes as a volunteer
your hikes.
best regards and kind wishes

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BRA95
BRA95

Overall rating : 4.3 / 5

Date of your route : Dec 16, 2019
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good

This route is based on the one published by the French Vexin Regional Nature Park, but in the opposite direction. Doing this circuit in the suggested direction allows you to finish by crossing the village, which means you can stop at places of interest if you wish. (There is an excellent bakery/pastry shop at the start of the walk. The pastries are delicious and much appreciated during the walk).
Crossing the plain can be difficult if it is windy or cold in winter. Avoid going down to the Trou à Morts if the ground is muddy. Some parts of the route are very muddy when it rains.
A good route for getting back into shape or for a half-day out in winter

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lancelotko
lancelotko

Overall rating : 4.7 / 5

Date of your route : Dec 16, 2019
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good

Nice walk, but the hole of the dead is rather disappointing and difficult to find with a GPS. Follow the directions in the text

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