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Wind Cave National ParkWildflowers
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Wind Cave National Park
Wildflowers - Common Evening Primrose
 
Common Evening Primrose - Oenothera villosa
NPS Photo by Jim Pisarowicz
Common Evening Primrose - Oenothera villosa
Shell-leaf Penstemon
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Natural Entrance of Wind Cave  

Did You Know?
Winds caused by changes in barometric pressure are what give Wind Cave its name. These winds have been measured at the cave's walk-in entrance at over 70 mph. The winds at the natural entrance of the cave attracted the attention of Native Americans and early settlers.

Last Updated: July 21, 2007 at 10:51 EST