Photographs of Upper Geyser Basin, Yellowstone National Park


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Sinter mounds
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Daisy is one of the Upper Geyser Basin's more predictable geysers, erupting for around 4 minutes to a height of 75 feet, separated by quiet periods of between 2 and 4 hours. The geyser pool is about 2 meters in diameter, partly surrounded by an irregular, rounded sinter rim, with other sinter formations and shallow pour-over pools all around. The vent is angled to the west about 20° off vertical, making the eruption more unusual and impressive. Activity is related to that of nearby Splendid Geyser. Daisy is one of five geysers in the basin for which activity is predicted.

Beyond Daisy Geyser, the path rejoins the western section of the main Upper Geyser Basin Loop; turning south, this encounters mostly wooded terrain, passing no more named thermal features until Shield Spring after half a mile.

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Keywords: Yellowstone National Park, Upper Geyser Basin, Wyoming, boardwalk trails, thermal features, geysers, hot springs, hot pools, boiling water
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