- January 1, 2025 - Updated with new information since originally published.
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Summary and Frequenly Asked Questions:
Pennsylvania is almost entirely covered with mountains, rolling hills, ridges, and plateaus, with rivers, canyons, and valleys in between. While the mountains do not reach the highs of their bigger cousins in the West, Pennsylvania is home to the Appalachian Mountains, which cut right through the state, with the Pocono and Allegheny Mountains as the most important sub-ranges.
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