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.
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.
