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Montenvers & Mer de Glace

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Montenvers & Mer de Glace

A red rack railway to France's largest glacier and an ice cave carved fresh every year.

Tickets & tours Open in Google Maps
Time needed
Half a day
Entry
Paid
Best time
Morning · Jun–Sep
Area
Rack railway

A red rack train climbs to France's largest glacier and its ice cave.

Where it is & how to get there

Address: Gare du Montenvers, 35 Place de la Mer de Glace, 74400 Chamonix-Mont-Blanc

  • Train: The Montenvers rack railway leaves from its own station behind Chamonix SNCF station, about 20 minutes to the top.
  • Hiking: The Grand Balcon Nord trail links Plan de l'Aiguille to Montenvers in about 2–3 hours.
  • Ticket: The train ticket includes the gondola and the ice cave in season.

The story of the Mer de Glace

In 1741 two Englishmen, William Windham and Richard Pococke, walked up to see the glacier and made it famous across Europe. Visitors came on mules until the rack railway opened in 1908, climbing to the Montenvers station at 1,913 metres.

The Mer de Glace, the "Sea of Ice", is the largest glacier in France, about 7 km long. It has been shrinking fast with climate change: signs on the stairs down to the ice cave show where the glacier surface was in past decades, a powerful sight.

Best time to visit

Best season

June to September; the train also runs in winter with views but limited access.

Best time of day

Morning trains are less crowded and the light on the Drus peak is beautiful.

Ice cave

The ice cave is re-carved every year and usually open in summer and part of winter.

Tips before you go

  • There are many steps down to the ice cave. Allow time and go at your own pace.
  • Reaching the ice cave involves many stairs down and back up: allow time and energy.
  • Visit the Glaciorium exhibition at Montenvers to understand the glacier's retreat.

Best hotels near the Mer de Glace

Well-known hotels within easy reach. Check prices and availability for your dates.

Hôtel du Montenvers

A historic mountain hotel at the top station, open in summer.

See prices

Hôtel Mont-Blanc Chamonix

Historic 5-star hotel in the town centre, facing the mountains.

See prices

Le Hameau Albert 1er

Family-run luxury chalets with a Michelin-starred restaurant.

See prices
All hotels near the Mer de Glace

What's around the Mer de Glace

  • The DrusA spectacular granite spire facing the Montenvers terrace.
  • Grand Balcon NordPanoramic trail towards the Aiguille du Midi mid-station.
  • GlacioriumAn exhibition about glaciers and climate.
  • Chamonix centreBack down by train in 20 minutes.

Questions travellers ask

How do I get to the Mer de Glace?

Take the Montenvers rack railway from Chamonix, about 20 minutes, then a gondola and stairs down to the ice cave.

Is the ice cave open all year?

It is usually open in summer and part of the winter season. Check before you go.

Is the glacier really shrinking?

Yes, it has lost a lot of thickness and length; markers on the walkway show past ice levels.

More in Chamonix

Aiguille du Midi

Aiguille du Midi

Read the guide
Lac Blanc

Lac Blanc

Read the guide
Lacs des Chéserys

Lacs des Chéserys

Read the guide
Le Brévent

Le Brévent

Read the guide
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Travel Plan · Montenvers & Mer de Glace Travel times, prices and opening hours change. Check official sites before you go. Photos: Unsplash. Privacy & disclosure