USA 4: Yellowstone National Park: Mammoth Hot Springs

The Mammoth Hot Springs contain huge terraces that were built while the hot spring water cooled down and deposited calcium carbonate. Regrettably the water stopped to flow down the terraces but it's still a marvellous view.





The Mammoth Hot Springs also featured hot pools that contain nearly boiling water. Even though the sulphur smell is very strong near the pools and the air really hot it was amazing.


The different colours in the hot pool result from different bacteria and algae living in the hot water.