Opening dates : Summer 2025 - 24 may to 2 november

The Cave

Dive into the heart of the glacier and discover an ephemeral work of art.
An ephemeral work of art that the Claret family has been maintaining and renewing for 3 generations (1st cave dug in 1946)

After reaching Montenvers from Chamonix, by cogwheel train, a new adventure awaits you: Take the gondola from Montenvers station to access the Mer de Glace glacier and visit the man-made ice cave.
In the bowels of the glacier: an original collection of ice sculptures. The cave has to be recut every summer because the glacier advances 70m every year.

Attention: Access to the cave is by stairs, about 170 steps.
No PRM access.

Other activities

The Glaciorium

An interpretation centre to answer all the questions that visitors ask themselves when they are faced with a glacier such as the Mer de Glace. The Glaciorium also responds to...

The Panoramic

A moment suspended in front of the Mer de Glace The restaurant Le Panoramique offers a unique experience in the heart of the mountains, with its vast panoramic terrace and...

The Temple of Nature

In 1779, Lord Blair, an English gentleman, finds himself caught in a storm in the Montenvers. The shelter under the stone was so uncomfortable that he had a hut built...

Opening dates : Summer 2025 - 24 may to 2 november

Opening hours From 02/10 to 02/11

Open every day 8.30 am – 4.30 pm

Last ascent : 4.00 pm
Last descent : 4.30 pm

Closure of the ice cave from September 29.

The gondola, the temple of nature and the Glaciorium will be open from 18 October to 2 November inclusive.

A train every hour or every 30 – or 20 minutes depending on demand.