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South Dakota's National Park With Caverns, Wildlife, And Scenic Landscapes Above And Below
Go spelunking through cave systems, see bison grazing, and admire nature's beauty at this incredible South Dakota national park. Here's where to find it.
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'Spiders on Mars':NASA's Curiosity rover stumbles upon an eerie find on the Red Planet
Boxwork deposits, found in South Dakota's Wind Cave, form through calcite-rich water hardening between rocks—similar to the process on Mars but on a grander scale. Mission scientist Kirsten ...