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SALT LAKE CITY — Utah state geologists and a group of intrepid volunteers say they’ve finally answered a nagging geological question: What’s the longest natural arch in the world?
The answer, they say, is Landscape Arch in Arches National Park in southeastern Utah.
Members of the all-volunteer Natural Arch and Bridge Society spent years developing a standardized measurement that looks at the widest horizontal opening in each arch — not the arch itself.
Landscape Arch spanned about 290 feet. Kolob Arch in Zion National Park is 3 feet shorter. The Associated Press
