One of the more anticipating activities in Yellowstone is to wait for a geyser to erupt.  Some erupt quite frequently, while others take a few years in between eruptions.  Probably the most popular and famous geyser is Old Faithful, because it erupts on a (somewhat) regular schedule.

I stood there in awe as the power of Nature erupted before my eyes.  Of course, I had to capture it on “film” (digital in this case) so I could relive the majesty of it afterwards.