Bijou Hills

USA / South Dakota / Pukwana /
 hills, National Natural Landmark
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This site is an excellent example of an erosional remnant of soft clays and shales capped by a channel sandstone and quartzite; it also has a paleontological and historical record extending back to the visit of F. V. Hayden in 1853. The 298-acre area is designated a National Natural Landmark.
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Coordinates:   43°30'38"N   99°15'30"W
This article was last modified 3 years ago