Excelsior Geyser, Geothermal feature in Yellowstone National Park
Excelsior Geyser is a massive hot spring characterized by its turquoise blue water.
Once capable of eruptions reaching up to 300 feet, it was active in the 19th century.
Part of the United States' first national park, symbolizing natural beauty and geothermal activity.
A popular tourist attraction, part of the Midway Geyser Basin.
The geyser transformed into a boiling lake after the last major eruptions in the 1880s.
Location: Wyoming
Source: Wikimedia