Travertine Terraces
Avatar

Travertine Terraces

by Lars Hoffmann, Jülich, Germany

The photography shows travertine terraces at Mammoth Hot Springs in Yellowstone National Park. Travertine is a form of limestone which is formed by a process of rapid precipitation of calcium carbonate. Over two tons of calcium carbonate was deposited each day on the terraces, gradually killing any vegetation that had managed to be growing before.