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.

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Florence

September 29, 2023

Hiking

Very nice view of the sea

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Best Hikes to Grognon Auxiliary Battery – underground fortification

4.8

(55)

426

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

18.0km

04:43

150m

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

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Moderate

4.8

(40)

444

hikers

2. View of Les Grands Sables – Plage des Grands Sables loop from Groix

26.6km

07:06

300m

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

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Hard

4.8

(14)

hikers

3. Groix – Menhir de Kermario loop from Groix

11.9km

03:09

110m

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

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Moderate

Details

Informations

Elevation 90 m

Weather

Friday 30 January

12°C

7°C

19 %

Additional weather tips

Max wind speed: 26.0 km/h

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Location: Groix, Morbihan, France

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Grognon Auxiliary Battery – underground fortification

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

2. View of Les Grands Sables – Plage des Grands Sables loop from Groix

3. Groix – Menhir de Kermario loop from Groix

Other Popular Places to Check Out

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