Previously I mentioned that I’ve mostly been photographing thermal features and hummingbirds. I’m not sure if this technically fits under those categories since the main subject is the Firehole River. But Midway Geyser Basin certainly adds most of the interest to the image since the large steam plumes of Grand Prismatic Hot Spring and Excelsior Crater rise dramatically in the morning light. Grand Prismatic is Yellowstone’s largest hot spring while Excelsior was one of the largest geysers until one of it’s eruptions blew out it’s plumbing. If you’re going to walk the boardwalk to see these features up close expect to have lots of company as this is one of Yellowstone’s most popular walks.