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France

Morbihan

Groix

Batterie annexe du Grognon – fortification souterraine

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Places to see

France

Morbihan

Groix

Batterie annexe du Grognon – fortification souterraine

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Batterie annexe du Grognon – fortification souterraine

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Done

25 people recommended this place

Recommended by 25 hikers out of 27

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Location: Groix, Morbihan, France

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See hikes here

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Routes here

Best Hikes to Batterie annexe du Grognon – fortification souterraine

4.8

(52)

402

hikers

1. Wild coast of the west of the island of Groix - loop

18.0km

04:43

150m

Intermediate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy

Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.

Intermediate

Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.

Expert

More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.

Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.

Intermediate

4.9

(25)

283

hikers

2. View of Port Saint-Nicolas – Plage des Grands Sables loop from Groix

26.2km

06:59

290m

Expert hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.

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How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy

Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.

Intermediate

Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.

Expert

More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.

Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.

Expert

4.8

(14)

hikers

3. Groix – Menhir de Kermario loop from Groix

11.9km

03:09

110m

Intermediate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy

Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.

Intermediate

Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.

Expert

More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.

Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.

Intermediate

Tips

Paul_C

March 13, 2023

This battery had been part of Fort du Grognon since the mid-1700s and had an underground powder magazine. This is where the gunpowder was stored. It was used in successive wars and adapted to advances in artillery over the centuries.

Translated by Google •

Florence

September 29, 2023

Very nice view of the sea

Translated by Google •

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Elevation 90 m

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Saturday 4 October

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100 %

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Location: Groix, Morbihan, France

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