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Appalachian Mountains


Visiting Rocky Mountains, Mountain Range in North America, United States


Brace Yourself for Some Incredible Appalachian Mountain Facts


Appalachian Mountains | Georgia's Physical Features


How Long Is The Appalachian Mountain Range?


Visiting Blue Ridge Mountains, Mountain Range in the United States of America

The Appalachian Mountains, often called the Appalachians, are a system of mountains in eastern North America. The Appalachians first formed roughly 480 million years ago during the Ordovician Period. They once reached elevations similar to those of the Alps and the Rocky Mountains before experiencing natural erosion. The Appalachian chain is a barrier to east-west travel, as it forms a series of alternating ridgelines and valleys oriented in opposition to most highways and railroads running east-west.