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Calligraphy lettering celebrates International Mountain Day. Hand drawn black words with mountain peaks in the background. This artwork emphasizes the significance of mountains worldwide

Source: Yuliya Hrelik / Getty

People around the world observed International Mountain Day on December 11, highlighting the vital role mountains play in ecosystems and communities. This year’s theme focused on sustainable mountain tourism and the preservation of natural landscapes. Organizations, environmentalists, and mountain communities marked the day with events, discussions, and educational campaigns aimed at raising awareness of the challenges faced by mountain regions, including climate change, deforestation, and poverty. The United Nations designated the day to encourage global action for the protection of mountain environments.