Cataclysmic landslide created ‘flat and tranquil’ valley enjoyed today in Zion National Park
sltrib.com
The Sentinel, a sandstone formation on Zion Canyon’s western wall, was once much larger.
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The Utah Geological Survey (UGS) is a division of the Utah Department of Natural Resources. Several specialized programs comprise the UGS: Data Management, Energy & Minerals, Geologic Hazards, Geologic Information & Outreach, Geologic Mapping, Groundwater & Wetlands, and Paleontology.
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