Mammoth Hot Springs at Dawn
Mammoth Hot Springs is geology in superdrive. In some locations, active springs are building up the terraces at a rate approaching two feet per year. New springs are born quickly, while others dry up suddenly. The building block of the Mammoth Hot Springs is Limestone. When it comes into contact with carbonic acid found in the spring water, it dissolves into a solution that is re-deposited as a material called travertine, forming the terraces.