EarthCache™ Collection

Each year, The Geological Society of America celebrates International EarthCache Day on the first Sunday of Earth Science Week and the last Sunday of World Space Week. A portion of the sales of official EarthCache™ items will go to support the work of the GSA.

For 2023, International EarthCache Day is October 8th.  Earn the 2023 souvenir when you find an EarthCache on October 7th or 8th! 

For more information about International EarthCache Day, please click here. 

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