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SCINASA

Taking a Gander at Utah’s Goosenecks

Photo: NASA

The San Juan River has carved deep, improbably curvy meanders into the desert landscape.

Tens of millions of years ago, the San Juan River in what is now southern Utah shared some characteristics with today's Mississippi River. In a bygone geologic era, the San Juan flowed across a relatively flat plain that formed in an ancient marine environment. Unencumbered by rugged terrain, the river was free to take a long, meandering path on its gradual journey downslope.

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