EarthCaches are filled with pools of geological knowledge, just like Pamukkale in Turkey. These bright blue, eye-catching terrace pools are created by the carbonate mineral left by the thermal flow of spring water. This souvenir is to celebrate International EarthCache Day by logging an EarthCache on October 7 and 8.

Just like the wave in the sandstone, everything has its ups and downs, but did you know that this sandstone’s ups and downs are a product of sand dunes and erosion? Every EarthCache teaches us something interesting about the ground we walk on, that river nearby, the mountains in the distance, and anything else geological!

The first EarthCache was created in Australia in 2004. Since then, nearly 40,000 EarthCaches have been published in 210 different countries! The souvenir image illustrates folding of sedimentary rock. All of the curving twisted layers were originally flat, but were compressed and warped by slow and powerful processes, such as the movement of tectonic plates pushing against each other.

Sixteen years ago, Geocaching HQ and the Geological Society of America teamed up to create an entirely unique cache type. Since the first EarthCache was published in Australia back in 2004, nearly 650,000 geocachers have logged an EarthCache and there are well over 7 million smilies for the EarthCaches on Geocaching.com. Those are some astronomical numbers! This souvenir is to celebrate another exciting International EarthCache Day.

Congratulations! You earned the International EarthCache Day 2019 souvenir. EarthCaches bring you to unique locations and teach fascinating geological lessons about our planet.

Congratulations! You earned the International EarthCache Day 2018 souvenir. EarthCaches bring you to unique locations and teach fascinating geological lessons about our Planet Earth.

Congratulations! You earned the International EarthCache Day 2017 souvenir by finding an EarthCache on October 7 or 8, 2017. EarthCaches provides an earth science lesson through a visit to a unique geological feature.

Congrats! You earned the International EarthCache Day souvenir by finding an EarthCache on October 9, 2016. EarthCaches don’t have physical containers, but instead bring you to a unique location and teach you a geological lesson.

Did you know that the geocaching game board is the ENTIRE EARTH? Pretty awesome, right? Thanks for celebrating International EarthCache Day with us by finding an EarthCache and earning this souvenir. You earned this souvenir on October 11, 2015.