International Mountain Day
International Mountain Day, 11 December 2025
Theme: Glaciers matter for water, food and livelihoods in mountains and beyond
International Mountain Day 2025 is an opportunity to highlight the importance of glacier preservation for agriculture, water security and the livelihoods of vulnerable mountain communities.
Glaciers, vast reserves of ice and snow found across the planet, are far more than frozen landscapes - they are lifelines for ecosystems and communities. Yet, these critical components of the Earth's systems are undergoing rapid and alarming transformations with profound consequences for us all.
#MountainsMatter
About International Mountain Day
Observed every year to create awareness about the importance of mountains to life, to highlight the opportunities and constraints in mountain development and to build alliances that will bring positive change to mountain peoples and environments around the world.