



Lac du Grand Mean
Bonneval-sur-Arc
These electric-blue lakes didn't exist 40 years ago. Hike to the edge of melting glaciers and witness climate change carved into the landscape: surreal colors, thundering icefalls, and the humbling scale of what's being lost.
Alpine glacial lakes
Challenging mountain hiking
Climate change witness
Spectacular turquoise waters
Tips
🏔️"breathtaking scenery amidst snow-capped mountains"
❄️check snow conditions before you go
🥾follow yellow signs then turn left at cairns
Lac du Grand Mean
Bonneval-sur-ArcOpen




These electric-blue lakes didn't exist 40 years ago. Hike to the edge of melting glaciers and witness climate change carved into the landscape: surreal colors, thundering icefalls, and the humbling scale of what's being lost.
Alpine glacial lakes
Challenging mountain hiking
Climate change witness
Spectacular turquoise waters
Tips
🏔️"breathtaking scenery amidst snow-capped mountains"
❄️check snow conditions before you go
🥾follow yellow signs then turn left at cairns