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Fall Colors in Pennsylvania | by NASA on The Commons
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Fall Colors in Pennsylvania

Central Pennsylvania presents an ancient landscape, worn down by the grind of ice, water, wind, and time. The ridge lines of the Appalachian Mountain chain, once formidable, are now gentle folds rising over fertile valleys. Ice age glaciers shaped the land, smoothing out the mountains and depositing rich soil as the ice melted away.


While the ice has done its work, this natural-color image, taken by the Landsat satellite, reveals another powerful natural force that has had a hand in sculpting the landscape: the Susquehanna River system. The river flows generally south from its headwaters in upstate New York to the Chesapeake Bay. In this image, the river cuts right through several ridge lines, apparently without regard to rock or gravity.


Image Number: 36054

Date: October 21, 2001

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Taken on October 21, 2001