Yellowstone's Old Faithful area from above. It includes many geysers, springs and other volcanic activity.
It is named after Old Faithful Geyser which erupts about every 90 minutes. There's a special phone number for geyser forecast tapes.
In this picture, the geyser is in the middle of the semi-circular are in the lower right (but not erupting). Several facilities like hotels, a store
and a post office are located around Old Faithful. Grand Geyser is near the bridge over the river slightly higher and right of the middle of the picture.
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