Since 2004, EarthCaches have encouraged geocachers to explore and celebrate the extraordinary geologic features of our planet, like these colorful rock formations in China. Shaped over millions of years by tectonic forces and erosion, the painted hills of Zhangye National Geopark are among the world’s most colorful natural wonders.
Tag: International EarthCache Day
Celebrate International EarthCache Day 2025!
Earn the International EarthCache Day 2025 souvenir by visiting any EarthCache and completing the logging requirements from October 10 through October 12, 2025.
Since 2004, EarthCaches have encouraged geocachers to explore and celebrate our planet’s extraordinary geological features.
New Souvenir: International EarthCache Day 2023!
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, pictured above.
Learn more about Earth and its incredibly unique formations on Saturday, October 7, and Sunday, October 8, in celebration of International EarthCache Day! Earn the official souvenir for visiting the physical location of the EarthCache and completing the logging requirements to receive your smiley.
