Just 75 miles outside of Washington, D.C., is Shenandoah National Park, home to the 105-mile Skyline Drive, and traveling the road by car is one of the most iconic American road trips you can ...
Abstract: National park is an important material basis for the construction of ecological civilization, and the land feature covering situation of national park will be a significant reference data.
Just north of the great Serengeti wildebeest migration, a smaller migration across the Mara ecosystem is collapsing. New maps ...
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