This photo was taken at the edge of Excelsior Geyser Crater. Excelsior is a hot spring in the Midway Geyser Basin located in Yellowstone National Park in the United States of America. The Excelsior Geyser pool discharges nearly 5000 gallons of 199 °F water per minute directly into the Firehole River.
Canon 5D Mark II
Canon 16 mm – 35 mm L Series Lens
Focal Length 16 mm
F / 22