Ojo Caliente Spring is a hot spring in Lower Geyser Basin, of Yellowstone National Park

Yellowstone National Park

Yellowstone National Park, established by the U.S. Congress and signed into law by President Ulysses S. Grant on March 1, 1872, is a national park located primarily in the U.S. state of Wyoming, although it also extends into Montana and Idaho...

. It is in the River Group which includes Azure Spring

Azure Spring

Azure Spring is a hot spring in the Lower Geyser Basin of Yellowstone National Park in the United States. The water temperature in the spring is 79°C ....

, and is located a few yards off the Fountain Flats Freight Road on the northern bank of the Firehole River

Firehole River

The Firehole River is one of two major tributaries of the Madison River. It flows north approximately from its source in Madison Lake on the Continental Divide to join the Gibbon River at Madison Junction in Yellowstone National Park...

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In Spanish

Spanish language

Spanish , also known as Castilian , is a Romance language in the Ibero-Romance group that evolved from several languages and dialects in central-northern Iberia around the 9th century and gradually spread with the expansion of the Kingdom of Castile into central and southern Iberia during the...

Ojo Caliente means "hot eye". It is a superheated, alkaline spring which, on its northern end, boils constantly to a height of 12 to 20 in (30.5 to 50.8 cm).