Photo Credit: VacationIdea
 

As you stroll on the boardwalk of the Upper Geyser Basin in Yellowstone from the Old Faithful Geyser to the Biscuit Basin, Firehole River follows along, contributing to the surreal scenery of this area with its erupting geysers, steam rising from hot pools and beautiful views.

Riverside Geyser, set on the banks of the river, erupts 75 feet high every six hours. One a sunny day, a rainbow can be spotted in the spray of.