Excelsior Geyser Panorma

Excelsior Geyser, formerly the largest geyser on Earth. This is now another big, steaming, simmering pool, the remnant of an explosive eruption in the nineteenth century which destroyed the geyser. The deep blue pool produces up to 4,000 gallons of water a minute, which flows down several colorful drainage channels into the Firehole River.

 

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