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The Breathtaking Pennsylvania Park With Tranquil Lakes, A Massive Boulder Field, And Hidden WaterfallsAs a historic site, the Poconos feature ... Boulder Field is recognized as a National Natural Landmark by the U.S. National Park Service. The park's mountainous landscape also creates abundant ...
a civil engineering expert from Boulder, Colorado. By working together with the local community, this team installed a clean water system powered by a local waterfall. Simple, sustainable and low-cost ...
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