Box Spring

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This article is about the spring in Yellowstone Park. For the frame used to support a mattress, see Box-spring.

Box Spring is a geyser in the Lower Geyser Basin of Yellowstone National Park in the United States.

Box Spring is part of the Pink Cone Group. Other geysers in this groups are Bead Geyser, Dilemma Geyser, Labial Geyser, Narcissus Geyser, Pink Geyser, and Pink Cone Geyser. Eruptions of Box Spring last about 2 minutes and are 10—15 feet (3—4.5 m) high. The interval between eruptions is 10—90 minutes.

As its name indicates, Box Spring was a hot spring until 1983 when the Borah Peak earthquake triggered activity in the spring and it began erupting. It was later discovered that Box Spring was recorded as being active in the 1870s.