International EarthCache Day
Each year GSA celebrates International EarthCache Day on the first Sunday of Earth Science Week.
EarthCaches are special geological locations anyone can visit to learn about our planet. In 2019, GSA and Geocaching.com are celebrating International EarthCache Day on October 12 and 13! Log any EarthCache on these dates and your Geocaching.com profile will receive the 2019 International EarthCache Day Souvenir. GSA also encourages geocachers to host EarthCache-themed events or hikes. If you run an event or visit an EarthCache, post about it in the Geocaching forums, or share it on social media and tag it with #EarthCache.
For future Earth Science Week dates and themes (and thus, future International EarthCache Day dates), please see AGI's Earth Science Week home-page.