The Batteries of Néron

Date of your route : Dec 23, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A very short hike with almost no elevation gain, so accessible to everyone, with undoubtedly beautiful views of the Chartreuse... When the weather isn't cloudy, as was the case for us!
The remains of the batteries are interesting, especially for locals. Having lived in the area for over 30 years, I was able to discover a piece of local history!

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

Very good trail starting from Ripaillère, easy to access after a few kilometres by car above Saint Martin le Vinoux, with a beautiful view of the Chartreuse peaks (Chamchaude, Pinea, etc.) at the start. Most of the trail then runs through very shady, leafy woods with no view at all, and the batteries at the end (disused buildings) don't offer any views either, so this well-marked and easy walk is best done in winter when you can see through the trees. The return via Clemencière is very pleasant and ends with a magnificent view over the whole Grenoble valley.

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Date of your route : Apr 01, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Beautiful hike, thank you to the person who described this route.

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Date of your route : May 06, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

A pleasant but short walk just a stone's throw from Grenoble.
The final ruins are of no interest whatsoever.

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Date of your route : Feb 01, 2021
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

Very nice with the snow, fairly easy hike.

We made a short video of the hike for anyone who's interested:

https://www.youtube.com/watch?v=XCCisT5X...

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Date of your route : Nov 16, 2017
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★☆☆ Average

Probably very pleasant in summer, as it is shaded, as indicated in the description. Pleasant even in winter.
Very easy, with little elevation gain.
The only problem is the signage on site, as the only signpost is at the very end, with nothing at the start.
When we came across it, we were wondering if we had taken the right path.
Note: the ruins of the fort look more like an old squat covered in graffiti than anything else, so there's no point in continuing along the paths above or below.

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Hello everyone, I haven't done this hike yet, but I'm planning to do it soon.
I'll be sure to comment on it afterwards.
Best wishes to all and happy hiking.

Dahu3patt

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Date of your route : Mar 26, 2017
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good

A nice little walk with beautiful views. A gentle climb and a slightly steep descent on the way back, as indicated.
Not many places to picnic and we were in the shade except after the tunnel towards the fort, where we were back in the sun.
One correction to the guidebook, however: the elevation gain is lower than indicated, around +150m.

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Thank you, cottelandiere58.
It's not easy to describe a hike, and inevitably, because we know the area, we tend to overlook the details that could cause the next hiker to get lost.
Given the difficulty of describing a hike, if we add to that the requirement to have the described routes tested, no one will dare to take on the task.
Once described, a hike is carefully reviewed by three moderators before being published, and ultimately, the testers are you, the hikers. We are always very grateful to those who provide us with their comments and give us ideas for improvement where necessary.
You say: stay as practical as possible and use common sense. I agree with you, but if we want to offer quality hikes, we need to be a little rigorous.
All of us volunteers thank you.

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Date of your route : Aug 29, 2015
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good

Description of the minimalist route for occasional hikers
Lack of detail at junctions; several paths to consider (a recurring problem on other hikes)
For example, at the tunnel exit to reach the fort, there are two paths, one uphill and the other flat. No information on site or in the description. Have the signs disappeared?
The creators of the routes are too experienced, and I would advise them to have the routes tested by inexperienced or even beginner hikers or families
Convenient picnic spots would be welcome along the route
In short, keep it as practical as possible and use common sense!
Thank you for your voluntary work.
Bp

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Date of your route : Sep 05, 2014
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good

Very beautiful hike. A prefectural decree (as a precaution) prohibits the descent, which is a bit steep after the fort ruins. But I confess, we took it anyway. Super interesting.

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Okay, I'll change it.
I'll come back the same way or take an easier route.
That said, I've lived nearby for over 30 years and have done this walk more than 100 times, and the prefectural decree does not apply to the path I was describing.

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gl38, I think that for safety reasons, you should adapt your route so that it avoids the dangerous sector.

Thank you, and keep us informed.
Best regards

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Date of your route : Aug 27, 2014
Reliability of the description : ★★☆☆☆ Disappointing
Ease of following the route : ★★☆☆☆ Disappointing
Route interest : ★★★☆☆ Average

This hike is no longer accessible in its entirety. A prefectural decree prohibits walking beyond the ruins of the fort.

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The poster dates from July 2013.
It is indeed very dangerous to continue westwards above Saint-Égrève, as there have been fatal falls involving mountain bikers.
The PGHM (High Mountain Rescue Team) recently went to rescue people stranded on the Néron ridge, which has nothing to do with the proposed hike.

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