The site is CLOSED for work and maintenance from May 12th to 23rd, 2025.
(Ice Cave CLOSED until May 30th 2025 included).
For any information regarding the Montenvers train, please contact the Montenvers Departmental Authority at 04.65.60.00.80 or accueil@montenverstrain.com
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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