Excelsior Geyser
Excelsior Geyser is a large, dormant hot spring located in the Midway Geyser Basin of Yellowstone National Park. It is known for its stunning blue-green colored water and for its occasional eruptions, which can reach heights of up to 300 feet. The geyser was once a major attraction in the park, but has been mostly dormant since the 1980s.