Morning Glory Pool is a hot spring in the Upper Geyser Basin of Yellowstone National Park in
the United States.
(~shared by Anneli Kallis)
History
The pool was named by Mrs. E. N. McGowan, wife of Assistant Park Superintendent, Charles McGowan
in 1883. She called it "Convolutus", the Latin name for the morning glory flower, which
the springs resemble. By 1889, the name Morning Glory Pool had become common usage in the park.[3]
Many early guidebooks called this feature Morning Glory Spring.
Composition
The distinct color of the pool is due to bacteria which inhabit the water. On a few rare
occasions the Morning Glory Pool has erupted as a geyser, usually following an earthquake or
other nearby seismic activity.
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