From the train to the chasms

Following in the footsteps of our ancestors, let's walk through the countryside to the chasms of the Bois de la Hye, known as the "Bois des Roches".
Passage impossible in (10), see notices

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 14.17 km
  • ◔
    Average duration: 4h 25 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 136 m
  • ↘
    Descent: - 145 m

  • ▲
    Highest point: 387 m
  • ▼
    Lowest point: 244 m
  • ⚐ Country: France
  • ⚐ District: Rioz (70190)
  • ⚑
    Start/End: N 47.426028° / E 6.07487°
  • Accessible from the train station Gare de Rioz.
  • ❏
    IGN map(s): Ref. 3322E
  • Hour-by-hour weather

Photos

Description of the walk

Car park near the lake
(S/E) Take the small bridge between the swimming pool and Lac de la Faïencerie. Walk along the lake on the swimming pool side and take the stairs on the left to reach Rue de la Faïencerie.
Take this street on the right until you reach the water tower.
When you reach the main street, turn left, then opposite the school, turn right onto Rue du Paradis.

(1) 100 metres after the wash house, turn right onto Rue du Tacot and follow it for about 400 metres.
At the crossroads, turn left onto Rue de Noirfond and continue to the motorway bridge.

(2) Go under the bridge, turn right onto Route des Fontenis towards the orchards.
Turn left onto the concrete path and 50 metres further on, turn left again, then right onto Rue Alexandre Graham Bell for about 300 metres.

(3) Continue straight ahead on the old Tacot road until you reach the village of Trésilley, about 2.5 km away.

(4) At the first houses in the village of Trésilley, turn left onto Rue de la Gare to reach the village square.

(5) At the junction with the D5 road (Rioz-Fondremand), go up opposite, along the Route de Montarlot (D33) for about 800 metres.

(6) Turn left onto a gravel path straight into the forest.
After 1.5 km, continue left (there is a marker buried in the middle of the path). Be careful, there is a steep descent!

(7) Continue straight ahead for 1 km, leaving the small signs for Rioz on your left and continuing straight ahead.
When you reach the Rioz-Montarlot road, turn left for 60 m, then right onto a tarmac road.

(8) Go through the barrier and turn left. After 100 metres, take a path on the left into the Bois de la Hye. Follow the winding path to discover the four chasms. Then continue straight ahead for 300 metres.

(9) 150 metres further on, on the left, discover the Source des Ermites. Continue along the path for about 2 kilometres.

(10) Just before the bridge with the D15 road, 10 metres away, turn left and follow the Buthiers river for 600 metres towards Rioz.
Climb a staircase and immediately turn right. Follow the N57 to the bridge.
After the bridge, immediately turn left onto a path that continues along the N57 for about 80 metres.

(11) Turn right onto the old Tacot road in the cutting.
At the first houses in Rioz, continue straight ahead to reach Place du Souvenir Français.

(12) Then turn right onto Rue Jules Jeanneney and at the stop sign, take Rue Henri Friard opposite, which leads back to the lake (S/E).

Waypoints

  1. S/E : km 0 - alt. 261 m - Lac de la Faïencerie - Buthiers (rivière)
  2. 1 : km 0.81 - alt. 257 m - Rue du Tacot on the right
  3. 2 : km 1.9 - alt. 269 m - Motorway bridge
  4. 3 : km 2.52 - alt. 277 m - Start of the stone path
  5. 4 : km 5.15 - alt. 310 m - Rue de la Gare Tresilley
  6. 5 : km 5.49 - alt. 307 m - Intersection with the D5 road
  7. 6 : km 6.27 - alt. 305 m - Gravel path
  8. 7 : km 7.76 - alt. 372 m - Three-way junction (in the forest)
  9. 8 : km 8.95 - alt. 277 m - Rioz Montarlot road
  10. 9 : km 10.19 - alt. 263 m - Source des Ermites
  11. 10 : km 11.88 - alt. 246 m - Buthiers River
  12. 11 : km 12.8 - alt. 258 m - Old Tacot road
  13. 12 : km 13.43 - alt. 254 m - Place du Souvenir Français
  14. S/E : km 14.17 - alt. 261 m - Lac de la Faïencerie

Worth a visit

Lac de la Faïencerie.
Wash houses.
six sinkholes in the forest.
Source des Ermites.

Reviews and comments

4.1 / 5
Based on 17 reviews

Reliability of the description
4.2 / 5
Ease of following the route
4 / 5
Route interest
3.9 / 5
sylchri
sylchri

Overall rating : 3.7 / 5

Date of your route : Apr 06, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★☆ Good
Very busy route : No

A pleasant route through the forest.
However, the end of the hike is a real headache.
A red tape prevents you from passing. What's the solution?
There is no other path on the map. So we go through, and there it is, the apocalypse. A section of the forest has been destroyed.
Destroyed by loggers using machines that can cut down a tree in seconds.
Then the best pieces are taken away by lorries. These loggers leave the site in a mess and I feel sorry for the woodcutters who have to work behind these louts who have no respect for the fauna, flora, etc.
To top it all off, we hear endless talk about environmental protection all year round, but it's all just hot air!
To finish, we had to climb over or lie flat on our stomachs to get through. Dangerous with children.
Then you have to get to the bridge. We had a hard time. We didn't feel safe. In conclusion, I will remove this hike from the site.
What a shame!

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ALDUCE
ALDUCE

Overall rating : 3.3 / 5

Date of your route : Sep 10, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★☆☆ Average
Very busy route : No

A rather pleasant walk... between points 3 and 10!
Before point 3: a bit long, crossing the village and the industrial estate is not very interesting.
Shortly after point 10: it's a pain to cross the N 57 and get into Rioz!
However, most of the route (between points 3 and 10) is varied terrain, often in forest (including a section in karstic terrain), which was much appreciated on this very hot Sunday.

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Philippe COULOT
Philippe COULOT

Thank you for your comments.
Enjoy your future walks.
Best regards

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Paps
Paps

Overall rating : 4.7 / 5

Date of your route : Aug 30, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

A very beautiful route, part of which is through the forest, which is nice when it's hot.
the end of the route is a bit difficult due to the work of the loggers.

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JL GOIN
JL GOIN

Please note that the water tower on Rue de la Faïencerie is no longer there... This does not change anything, except that there is no longer a landmark at the start...

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Philippe COULOT
Philippe COULOT

Hello
I modified the route today because you are not the first to complain about the end of the route.
I couldn't find my old notes, but I remember very well that at WP 10 we modified the route to avoid the problem that arose when the N57 expressway opened.
Kind regards.

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elvyre
elvyre

Overall rating : 2.3 / 5

Date of your route : Jul 17, 2023
Reliability of the description : ★★☆☆☆ Disappointing
Ease of following the route : ★★☆☆☆ Disappointing
Route interest : ★★★☆☆ Average
Very busy route : Yes

Much of the hike is on tarmac.
From point 10 onwards, it is essential to change the route description. We followed the path before the sewage treatment plant but completely improvised the dangerous crossing, and the end of the route is no longer as indicated. We had to return to the main road at Rioz.
We mainly followed the yellow cycle route as the descriptions were unreliable in some places.

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michele loigerot
michele loigerot

Overall rating : 4 / 5

Date of your route : Jul 09, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

Hello
Lovely walk with the second part entirely in the forest, but a shame about the problem at no. 10! Walking along the D15 and crossing the two roundabouts is still dangerous when heading towards the village entrance.
Best regards

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zaboudie
zaboudie

Overall rating : 4.3 / 5

Date of your route : Feb 25, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A lovely walk for the whole family, with the option of shortening the route with young children to visit the chasms and the spring

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MTS21
MTS21

Overall rating : 4.7 / 5

Date of your route : Sep 18, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

A lovely walk in fine weather. An interesting and easy route. See previous comments regarding the end of the route at the sewage treatment plant. Follow the route provided by the tourist office.
best regards
MTS

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Philippe COULOT
Philippe COULOT

Overall rating : 4.3 / 5

Date of your route : Sep 19, 2022
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

Hello
A lovely walk, but as already mentioned, do not follow the route from the sewage treatment plant. You need to go up the road, turn left
for 30 metres and turn right onto a stony path going uphill to reach the bridge that crosses the dual carriageway twice. Then, after the bridge, turn left to reach RIOZ and then the starting point.
Best regards
Phil CLT.

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juliette25
juliette25

Overall rating : 2.7 / 5

Date of your route : Jul 06, 2020
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★☆☆ Average
Route interest : ★★☆☆☆ Disappointing
Very busy route : No

Note that at the top of the stairs, Rue de la Faiencerie and the street opposite are signposted.The old road to Trésilley, when you reach the three-way junction, you must go straight ahead. This is not signposted. On the way back, before you reach the D15 bridge, the path ends as it is no longer maintained. Finally, the path you have to take after the N57 bridge is impossible to find. The end of this walk, which is not very interesting, needs to be reviewed.

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girofly
girofly

Overall rating : 4.7 / 5

Date of your route : Jun 28, 2020
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

a very beautiful walk, but be aware that the end of the route can no longer be completed due to the new roads in Rioz.
I recommend following the route as indicated at the tourist office.

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Pascale POULNOT
Pascale POULNOT
• Edited:

Overall rating : 4 / 5

Date of your route : May 21, 2020
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

We found ourselves in front of the dual carriageway in Rioz, not really knowing where to go. Other than that, it was great!

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Amanda V
Amanda V

Overall rating : 5 / 5

Date of your route : Apr 14, 2019
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

Hike starting from Lake Rioz with information panel on site. As the previous hiker mentioned, the route has been modified between points 9 and 10 due to work on the N57, which cannot be crossed at the end of the route. Access to the construction site is prohibited (follow the new mountain bike trail markers, which are very clearly indicated) In the forest, you will discover the chasms of the Bois de la Hye, known as the "Bois des Roches", as well as the Ermit network, a very pretty resurgence of an underground stream that then winds its way through the forest. This little spot with a bench is ideal for taking a break!

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