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 more information about International EarthCache Day, please click here.
Earn a digital souvenir when you find an earthcache on October 10th or 11th! 
