Artemisia Geyser, Geyser in Upper Geyser Basin, Yellowstone National Park, US.
Artemisia Geyser is a geyser in the Upper Geyser Basin of Yellowstone National Park featuring a large pool with turquoise-blue water. The pool stretches roughly 55 feet in both directions and contains transparent hot water heated by geothermal activity below the ground.
The geyser was named in 1883 by geologist Walter Weed after a sagebrush plant native to the Yellowstone region. The naming reflected the botanist's interest in the plant species surrounding the thermal feature.
The geyser serves as a research site for geologists studying the thermal features of Yellowstone, contributing to scientific understanding of hydrothermal systems.
Activity here is unpredictable, with eruptions occurring at intervals ranging from a few hours to a couple of days apart. Access to this location is available via marked pathways in the park and requires no special equipment or preparation.
The water properties remain remarkably stable over time, with mineral deposits displaying a distinctive grey-green coloration rarely seen at other thermal features. This color characteristic makes it visually stand out among Yellowstone's many geothermal attractions.
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