International Mountain Day Dec. 11, 2023

Peek at your calendars! December 11 is International Mountain Day, a special day designated by the United Nations General Assembly back in 2003. The theme for this year"s commemoration is "Restoring mountain ecosystems," connecting with the UN"s Decade on Ecosystem Restoration.

© Hung Chung Chih/Shutterstock

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Today in History

Floating mailboxes
Dec. 11, 2024International Mountain Day

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Dec. 22, 2024Christmas tree at Crystal Pier, San Diego, California, United States
Oct. 27, 2025Thick-billed raven, Simien Mountains, Ethiopia
Mar. 10, 2025National Napping Day
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Mar. 1, 2025Aurora borealis over Maligne Lake in Alberta
Jul. 5, 2024Daintree Rainforest and Noah Beach, Queensland, Australia
Dec. 13, 2023Svolvaer, Lofoten Islands, Norway
Mar. 23, 2024World Meteorological Day
Love is in the snow
Mar. 14, 2025Celebrating Pi Day
Dec. 15, 2024Lake Misurina, Dolomites, Italy
Nov. 11, 2023Young Peak, British Columbia
May 12, 2024Mothers Day
Say hello to these halophytes!
Oct. 26, 2024Gespensterwald, Nienhagen, Germany
Flying the flag for Pride
Oct. 24, 2023Füzér Castle in the Zemplén Mountains, Hungary
Jun. 25, 2025Glastonbury Festival begins
Oct. 29, 2025Ancient til trees in Fanal Forest, Madeira, Portugal
Mesmerising glass pyramids
Oct. 19, 2025Apples ready for harvest, Minnesota, United States
Jun. 16, 2025World Sea Turtle Day
Sharks, just living their lives
Sep. 17, 2025A young bull moose, Denali National Park, Alaska, United States
Jan. 15, 2024Northern Lights
Aug. 6, 2024Molokini crater, Maui, Hawaii, USA
A modern recreation
‘The hills have a power to soothe and heal which is their very own.’
Big rocks, big heads, still counting?
Dec. 14, 2024Christmas Bird Count turns 125