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Detailed view of boxwork formations inside Wind Cave, Wind Cave National Park, South Dakota, United States of America
- 20120610 - South Dakota (Travel)-B0021588.JPG
- © 2012 Jason O. Watson. All rights reserved.
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- 5616x3744 / 18.4MB
travel United States of America United States America USA US South Dakota SD Wind Cave National Park Nat'l National Park Service NPS tour tourism tourist attraction destination outside outdoors nature natural popular landmark recreation preservation conservation boxwork box work rock formation Wind Cave speleogen cave