Did you know that the terraces in the park are made out of the same substance as cave formations? In caves the process happens as gravity pulls water down through limestone and deposits calcium carbonate on the cave ceiling (stalactites) or floor (stalagmites). In these terraces it happens in reverse. As water is heated underground from the caldera it expands and rises, eventually coming out of the ground and depositing calcium carbonate on the surface. #GeologyRocks 🤓
Thanks to @derek_verzuh for taking the #YellowstonePledge and showing how you can get great photos while staying safely on the boardwalks!