Deep pool
Lined with yellow
Sulfur deposits
Located in the Yellowstone National Park geothermal hot-spot of Norris Geyser Basin, Emerald Spring is 27 feet deep with a Fahrenheit water temperature hovering around 182 degrees.
“Other parts of Norris, those with natural springs, tend to be emerald green due to the blue of refracted light in combination with the yellow of sulfur lining the pool.” – Courtney Holden