International Mountain Day Dec. 11, 2025

International Mountain Day

Every December 11, we celebrate International Mountain Day, honouring the majestic peaks that shape our planet and the glaciers that support life. From the rolling Alps to the towering Himalayas, mountains cover nearly a quarter of Earth"s land and host 15% of the world"s population and nearly half of its biodiversity hotspots. Mount Everest, the world"s highest peak at over 8,800 metres, stands as a symbol of human aspiration and natural beauty. Its glaciers feed rivers sustaining millions, showing that mountains are more than scenery—they are lifelines.

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Today in History

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Dec. 11, 2023International Mountain Day
Dec. 11, 2024International Mountain Day

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Aug. 23, 2025St. Barbaras Cathedral, Kutná Hora, Czechia
May 13, 2025Yoho National Park, British Columbia
Mar. 25, 2026Forgetmenot Pond, Kananaskis Country, Alberta
Bright blue lakes and rugged mountains
Back to the future
Feb. 17, 2026Chinese New Year
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Pretty in pink
Feb. 13, 2024Mardi Gras
Straight out of a fairytale
Jun. 1, 2025World Reef Awareness Day
Mar. 5, 2026Evening over Göreme, Cappadocia, Türkiye
Nov. 24, 2023Green Friday
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This blue succulent is as good as gold here
Why is this cliffside ablaze?
Dare to tread through the fairy flower?
Eyes on the skies
Do pandas enjoy winter?
Nov. 1, 2024Vineyards in Varnhalt, Black Forest, Germany
Oct. 24, 2023Füzér Castle in the Zemplén Mountains, Hungary
The sun sets on the Valley of the Moon
Teddy bears of the sea
Mar. 30, 2024Brown-throated three-toed sloth
Oct. 4, 2024Nuit Blanche Toronto
Apr. 18, 2026World Heritage Day
Nov. 13, 2024Sea lion in a kelp forest, Baja California, Mexico
Nov. 1, 2025Yellowstone National Park, Wyoming, United States
Jul 20, 2026International Moon Day
Oct. 11, 2023The Painted Hills, Oregon