Strike notice has been given for the morning of May 10, 2025, filed by the trade unions of the Régie Départementale du Train du Montenvers.
If no agreement is reached before this date, it will be impossible for customers to access the Montenvers site on Saturday May 10, 2025 from 7.30am to 12pm. The gondola lift and the ice cave will open as soon as train operations resume.
For all information about the train:
Once at Montenvers, take the gondola to access to the Mer de Glace glacier
Once you've reached Montenvers from Chamonix by cog railway, a new adventure awaits you: a gondola lift will take you to the Mer de Glace glacier.
Please note: Access to the cave is by staircase, with around 170 steps.
PRM access is not possible.
An ephemeral work of art
Every year, the "grottus" sculpt a veritable masterpiece in the ice. The ice walls sparkle, revealing incredible shades of blue. It's an intense sensory experience that will leave a lasting impression
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