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Find Your Science at GSA
30 September 2010
GSA Release No. 10-50
PIO Contact:
Christa Stratton
Director of Education, Communication, & Outreach
EarthCache Contact:
Director, GSA Education & Outreach
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International EarthCache Day Scores a Perfect 10

Boulder, Colorado, USA – International EarthCache Day will launch the American Geological Institute's Earth Science Week on 10 October 2010 (10-10-10), celebrating 10,000 sites for the exploration of Earth's natural wonderments.

EarthCache adventurers become field geologists for a day. Using the same concept as Geocaching — inputting latitude and longitude dimensions into a global positioning system (GPS) device — participants follow directions to a chosen site.

EarthCache sites all around the world mark unique geological processes, surface features, or aspects of Earth's natural history that allow searchers to learn about geology and how scientists gather evidence to learn about the Earth. EarthCache sites include fossil exploration, mining sites, and mineral discoveries among others. The main difference from Geocaching is that there are no hidden trinkets or boxes at EarthCache locations; instead participants are given information that teaches about the Earth and its formations. EarthCache adventures vary in difficulty, and can be fun for the whole family as well as educational.

Learn more about EarthCache programs at

More than a million people have visited EarthCache sites since the program began in 2004 with an idea by a Geological Society of America member to work with Geocaching. The first EarthCache sites were developed by Geocache enthusiasts in cooperation with Groundspeak, Inc., and were located in Australia and Colorado, USA.

Outdoor lovers are invited to contribute new EarthCache sites using their own Earth knowledge and inspiration. Learn more and submit proposals with photos and stories to For more program information, contact Gary Lewis at the address above.